Can we edit memories? | Amy Milton

134,265 views ・ 2020-06-14

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00:00
Transcriber: Joseph Geni Reviewer: Camille Martínez
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Prevodilac: Milenka Okuka Lektor: Ivana Krivokuća
00:12
Memory is such an everyday thing that we almost take it for granted.
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Sećanje je toliko svakidašnja stvar da ga skoro uzimamo zdravo za gotovo.
00:17
We all remember what we had for breakfast this morning
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Svi se sećamo šta smo imali jutros za doručak
00:20
or what we did last weekend.
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ili šta smo radili prošlog vikenda.
00:21
It's only when memory starts to fail
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Tek kad nas sećanje počne da izdaje
00:23
that we appreciate just how amazing it is
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cenimo koliko je neverovatno
00:26
and how much we allow our past experiences to define us.
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i koliko dozvoljavamo prošlim iskustvima da nas određuju.
00:31
But memory is not always a good thing.
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Međutim, sećanje nije uvek dobro.
00:35
As the American poet and clergyman John Lancaster Spalding once said,
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Kao što je američki pesnik i sveštenik Džon Lankaster Spalding jednom rekao:
00:38
"As memory may be a paradise from which we cannot be driven,
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„Sećanje možda jeste raj iz kog nam nema progona,
00:42
it may also be a hell from which we cannot escape."
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ali ono može da bude i pakao iz kog nam nema bekstva.”
00:46
Many of us experience chapters of our lives
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Mnogi od nas u životu dožive poglavlja
00:49
that we would prefer to never have happened.
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koja bismo voleli da se nikad nisu desila.
00:52
It is estimated that nearly 90 percent of us
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Procenjuje se da će skoro 90 procenata nas
00:54
will experience some sort of traumatic event during our lifetimes.
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da doživi neki vid traumatičnog događaja tokom života.
00:59
Many of us will suffer acutely following these events and then recover,
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Mnogi od nas će snažno da pate nakon ovih događaja i oporave se,
01:04
maybe even become better people because of those experiences.
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možda čak i da postanu bolji ljudi zbog tih iskustava.
01:08
But some events are so extreme that many --
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Međutim, neki događaji su toliko ekstremni da će kod mnogih -
01:13
up to half of those who survive sexual violence, for example --
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skoro polovine onih koji prežive seksualno nasilje, na primer -
01:16
will go on to develop post-traumatic stress disorder,
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da se razvije posttraumatski stresni poremećaj,
01:19
or PTSD.
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tj. PTSP.
01:22
PTSD is a debilitating mental health condition
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PTSP je iscrpljujuće mentalno stanje
01:25
characterized by symptoms such as intense fear and anxiety
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koga karakterišu simptomi poput snažnog straha i anksioznosti,
01:30
and flashbacks of the traumatic event.
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kao i flešbekovi traumatičnog događaja.
01:33
These symptoms have a huge impact on a person's quality of life
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Ovi simptomi imaju ogroman uticaj na kvalitet života osobe
01:38
and are often triggered by particular situations
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i često ih izazivaju određene situacije
01:40
or cues in that person's environment.
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ili nadražaji iz okruženja te osobe.
01:44
The responses to those cues may have been adaptive when they were first learned --
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Reakcije na te nadražaje su možda bile adaptivne kada su prvi put stečene -
01:49
fear and diving for cover in a war zone, for example --
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strah i beg u zaklon u ratnoj zoni, na primer -
01:53
but in PTSD,
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ali kod PTSP-a,
01:54
they continue to control behavior when it's no longer appropriate.
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nastavljaju da upravljaju ponašanjem i kad više nisu odgovarajuća.
01:58
If a combat veteran returns home and is diving for cover
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Ukoliko se ratni veteran vrati kući i beži u zaklon
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when he or she hears a car backfiring
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kada čuje pucanje iz auspuha automobila
02:04
or can't leave their own home because of intense anxiety,
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ili ne može da napusti kuću zbog snažnog osećaja anksioznosti,
02:08
then the responses to those cues, those memories,
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onda su reakcije na te nadražaje, ta sećanja
02:12
have become what we would refer to as maladaptive.
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postale nešto što označavamo kao maladaptacije.
02:16
In this way, we can think of PTSD as being a disorder of maladaptive memory.
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S tim u vezi, možemo da mislimo o PTSP-u kao poremećaju maladaptivnog sećanja.
02:24
Now, I should stop myself here,
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Trebalo bi da se zaustavim ovde
02:26
because I'm talking about memory as if it's a single thing.
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jer govorim o sećanju kao da je jedinstvena stvar.
02:29
It isn't.
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Nije.
02:31
There are many different types of memory,
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Postoje razni različiti vidovi sećanja,
02:33
and these depend upon different circuits and regions within the brain.
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a oni zavise od različitih mreža i oblasti unutar mozga.
02:38
As you can see, there are two major distinctions in our types of memory.
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Kao što vidite, postoje dve značajne podele naših vidova sećanja.
02:43
There are those memories that we're consciously aware of,
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Postoje sećanja kojih smo svesni,
gde znamo da znamo
02:46
where we know we know
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02:47
and that we can pass on in words.
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i koja možemo da iskažemo rečima.
02:49
This would include memories for facts and events.
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Ona uključuju sećanja na činjenice i događaje.
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Because we can declare these memories,
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Pošto možemo da iskažemo ova sećanja,
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we refer to these as declarative memories.
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označavamo ih kao deklarativna sećanja.
02:58
The other type of memory is non-declarative.
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Drugi vid sećanja je nedeklarativni.
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These are memories where we often don't have conscious access
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To su sećanja gde često nemamo svestan pristup
03:05
to the content of those memories
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sadržaju tih sećanja
03:07
and that we can't pass on in words.
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i koja ne možemo da iskažemo rečima.
03:10
The classic example of a non-declarative memory
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Klasični primer nedeklarativnog sećanja
03:13
is the motor skill for riding a bike.
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je motorna veština vožnje bicikla.
03:16
Now, this being Cambridge, the odds are that you can ride a bike.
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Kako je ovo Kembridž, verovatno znate da vozite bicikl.
03:19
You know what you're doing on two wheels.
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Znate šta radite na dva točka.
03:22
But if I asked you to write me a list of instructions
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Međutim, ukoliko bih vam zatražila da mi napišete spisak uputstava
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that would teach me how to ride a bike,
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koja bi me podučila vožnji bicikla -
03:27
as my four-year-old son did when we bought him a bike
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moj četvorogodišnji sin mi je to tražio dobivši bicikl
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for his last birthday,
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za prošli rođendan -
03:31
you would really struggle to do that.
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mučili biste se da to učinite.
03:35
How should you sit on the bike so you're balanced?
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Kako da sedite na biciklu i održavate ravnotežu?
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How fast do you need to pedal so you're stable?
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Koliko brzo treba da okrećete pedale da biste bili stabilni?
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If a gust of wind comes at you,
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Pri udaru vetra,
03:42
which muscles should you tense and by how much
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koje mišiće morate da stegnete i koliko jako
03:45
so that you don't get blown off?
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kako vas ne bi oborio?
03:48
I'll be staggered if you can give the answers to those questions.
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Bila bih zapanjena ukoliko biste odgovorili na ova pitanja.
03:51
But if you can ride a bike, you do have the answers,
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Međutim, ako znate da vozite bicikl, znate odgovore,
03:55
you're just not consciously aware of them.
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samo što ih niste svesni.
04:00
Getting back to PTSD,
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Da se vratimo na PTSP.
04:02
another type of non-declarative memory
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Drugi vid nedeklarativnog sećanja
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is emotional memory.
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je emocionalno sećanje.
04:07
Now, this has a specific meaning in psychology
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Sad, ono ima naročito značenje u psihologiji
04:09
and refers to our ability to learn about cues in our environment
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i odnosi se na našu sposobnost da učimo o nadražajima iz našeg okruženja
04:13
and their emotional and motivational significance.
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kao i o njihovom emocionalnom i motivacionom značaju.
04:16
What do I mean by that?
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Šta podrazumevam pod tim?
04:18
Well, think of a cue like the smell of baking bread,
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Razmislite o nadražaju kao što je miris ispečenog hleba
04:22
or a more abstract cue like a 20-pound note.
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ili apstraktnijem nadražaju poput novčanice od 20 funti.
04:25
Because these cues have been pegged with good things in the past,
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Zato što za te nadražaje vezujemo dobre stvari iz prošlosti,
04:29
we like them and we approach them.
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sviđaju nam se i prilazimo im.
04:31
Other cues, like the buzzing of a wasp, elicit very negative emotions
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Drugi nadražaji, poput zujanja ose, izazivaju veoma negativne emocije
04:36
and quite dramatic avoidance behavior in some people.
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i kod nekih ljudi prilično dramatične pokrete izbegavanja.
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Now, I hate wasps.
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Sad, ja mrzim ose.
04:44
I can tell you that fact.
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To vam zasigurno mogu reći.
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But what I can't give you are the non-declarative emotional memories
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Međutim, ne mogu da vam prenesem nedeklarativna emocionalna sećanja
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for how I react when there's a wasp nearby.
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o tome kako reagujem kada je osa u blizini.
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I can't give you the racing heart,
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Ne mogu da vam prenesem lupanje srca,
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the sweaty palms, that sense of rising panic.
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znojave dlanove, osećaj nadiruće panike.
04:57
I can describe them to you,
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Mogu da vam ih opišem,
05:00
but I can't give them to you.
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ali ne mogu da vam ih prenesem.
05:04
Now, importantly, from the perspective of PTSD,
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Što je još značajnije iz perspektive PTSP-a,
05:07
stress has very different effects on declarative and non-declarative memories
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stres ima veoma različit uticaj na deklarativna i nedeklarativna sećanja,
05:12
and the brain circuits and regions supporting them.
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kao i na mreže u mozgu i oblasti koje ih podržavaju.
05:15
Emotional memory is supported by a small almond-shaped structure
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Emocionalno sećanje podržava malena bademasta struktura
05:18
called the amygdala
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koja se naziva amigdala,
05:20
and its connections.
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kao i njene veze.
05:21
Declarative memory, especially the what, where and when of event memory,
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Deklarativno sećanje, naročito šta, gde i kada događaja iz sećanja
05:26
is supported by a seahorse-shaped region of the brain
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podržava oblast mozga u obliku morskog konjica
05:29
called the hippocampus.
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koja se naziva hipokampus.
05:31
The extreme levels of stress experienced during trauma
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Ekstremni nivoi stresa koji se iskuse tokom traume
05:34
have very different effects on these two structures.
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imaju vrlo različit uticaj na ove dve strukture.
05:38
As you can see, as you increase a person's level of stress
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Kao što možete da vidite, kako povećavate nivo stresa kod osobe
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from not stressful to slightly stressful,
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od nestresnog do blago stresnog,
05:44
the hippocampus,
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hipokampus
05:45
acting to support the event memory,
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koji podržava sećanje na događaj
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increases in its activity
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pojačava svoju aktivnost
05:49
and works better to support the storage of that declarative memory.
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i postaje efikasniji u pohranjivanju tog deklarativnog sećanja.
05:53
But as you increase to moderately stressful, intensely stressful
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No kako pojačavate do umereno stresnog, intenzivno stresnog,
05:57
and then extremely stressful, as would be found in trauma,
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a onda ekstremno stresnog, kao što zatičemo kod traume,
06:00
the hippocampus effectively shuts down.
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hipokampus se u suštini gasi.
06:05
This means that under the high levels of stress hormones
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To znači da pri visokim nivoima hormona stresa
06:08
that are experienced during trauma,
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koji se doživljavaju tokom traume,
06:10
we are not storing the details,
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mi ne pohranjujemo detalje,
06:12
the specific details of what, where and when.
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naročite detalje šta, gde i kada.
06:17
Now, while stress is doing that to the hippocampus,
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Sad, dok stres to radi hipokampusu,
06:19
look at what it does to the amygdala,
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pogledajte šta radi amigdali,
06:21
that structure important for the emotional, non-declarative memory.
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strukturi koja je važna za emocionalno, nedeklarativno sećanje.
06:25
Its activity gets stronger and stronger.
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Njena aktivnost postaje sve jača.
06:29
So what this leaves us with in PTSD
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Stoga nam kod PTSP-a ostaje
06:32
is an overly strong emotional -- in this case fear -- memory
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preterano snažno emocionalno sećanje - u ovom slučaju na strah -
06:36
that is not tied to a specific time or place,
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koje nije vezano za određeno vreme ili mesto
06:39
because the hippocampus is not storing what, where and when.
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jer hipokampus ne pohranjuje šta, gde i kada.
06:44
In this way, these cues can control behavior
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Na taj način, ovi nadražaji mogu da kontrolišu ponašanje
06:47
when it's no longer appropriate,
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kada ono više nije prikladno,
06:49
and that's how they become maladaptive.
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i na taj način nastaju maladaptivna sećanja.
06:52
So if we know that PTSD is due to maladaptive memories,
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Ako znamo da je PTSP posledica maladaptivnih sećanja,
06:58
can we use that knowledge to improve treatment outcomes
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možemo li da koristimo to znanje da unapredimo ishode lečenja
07:01
for patients with PTSD?
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kod pacijenata sa PTSP-om?
07:05
A radical new approach being developed to treat post-traumatic stress disorder
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Radikalno novi pristup koji se razvija za lečenje posttraumatskog stresnog promećaja
07:10
aims to destroy those maladaptive emotional memories
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cilja da uništi ta maladaptivna emocionalna sećanja
07:13
that underlie the disorder.
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koja su u srži poremećaja.
07:16
This approach has only been considered a possibility
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Ovaj pristup se jedino razmatra kao mogućnost
07:19
because of the profound changes in our understanding of memory
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zbog suštinskih promena u našem razumevanju sećanja
07:22
in recent years.
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u proteklim godinama.
07:24
Traditionally, it was thought that making a memory
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Tradicionalno se smatralo da su sećanja
07:27
was like writing in a notebook in pen:
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poput ispisivanja nalivperom po svesci:
07:29
once the ink had dried, you couldn't change the information.
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jednom kad se mastilo osuši, ne možete da izmenite informaciju.
07:33
It was thought that all those structural changes
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Smatrano je da su sve strukturalne promene
07:35
that happen in the brain to support the storage of memory
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koje se dešavaju u mozgu tokom pohranjivanja sećanja
07:38
were finished within about six hours,
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završene otpilike u roku od šest sati,
07:40
and after that, they were permanent.
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a nakon toga, trajno ostaju.
07:43
This is known as the consolidation view.
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Ovo je poznato kao stanovište o konsolidaciji.
07:47
However, more recent research suggests that making a memory
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Međutim, skorašnja istraživanja nagoveštavaju da su sećanja
07:50
is actually more like writing in a word processor.
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zapravo više nalik pisanju u programu za obradu teksta.
07:53
We initially make the memory and then we save it or store it.
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Prvobitno steknemo sećanje i potom ga sačuvamo ili pohranimo.
07:57
But under the right conditions, we can edit that memory.
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Međutim, pod odgovarajućim uslovima, možemo da redigujemo to sećanje.
08:02
This reconsolidation view suggests that those structural changes
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Stanovište rekonsolidacije nagoveštava da strukturalne promene
08:05
that happen in the brain to support memory
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koje se dešavaju u mozgu kao podrška sećanju
08:08
can be undone,
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mogu da se izbrišu,
08:10
even for old memories.
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čak i kod starih sećanja.
08:14
Now, this editing process isn't happening all the time.
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Sad, ovaj proces redigovanja se ne dešava uvek.
08:17
It only happens under very specific conditions
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Dešava se samo pod naročitim uslovima
08:20
of memory retrieval.
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vraćanja sećanja.
08:23
So let's consider memory retrieval as being recalling the memory
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Zato razmotrimo vraćanje sećanja kao opozivanje sećanja
08:26
or, like, opening the file.
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ili kao otvaranje fajla.
08:30
Quite often, we are simply retrieving the memory.
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Počesto, mi prosto vraćamo sećanja.
08:32
We're opening the file as read-only.
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Otvaramo fajl kao neizmenjiv.
08:35
But under the right conditions,
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Međutim, pod odgovarajućim uslovima,
08:37
we can open that file in edit mode,
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možemo da otvorimo fajl u režimu za redigovanja,
08:40
and then we can change the information.
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i potom izmenimo informaciju.
08:42
In theory, we could delete the content of that file,
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U teoriji, možemo da izbrišemo sadržaj fajla
08:46
and when we press save,
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i kada pritisnemo opciju za čuvanje,
08:48
that is how the file -- the memory --
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na taj način fajl - sećanje -
08:51
persists.
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opstaje.
08:55
Not only does this reconsolidation view
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Ne samo da nam ovo rekonsolidacijsko stanovište
08:57
allow us to account for some of the quirks of memory,
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dozvoljava da objasnimo neke od začkoljica sećanja,
09:00
like how we all sometimes misremember the past,
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poput toga da svi ponekad pogrešno upamtimo prošlost,
09:03
it also gives us a way to destroy those maladaptive fear memories
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već nam i pruža način da uništimo maladaptivna sećanja na strah
09:08
that underlie PTSD.
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koja su u srži PTSP-a.
09:10
All we would need would be two things:
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Potrebne bi nam bile samo dve stvari:
09:13
a way of making the memory unstable -- opening that file in edit mode --
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način da sećanje ućinimo nestabilnim - otvaranje fajla u režimu za redigovanje -
09:18
and a way to delete the information.
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i način da izbrišemo informaciju.
09:21
We've made the most progress
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Najviše smo napredovali
09:22
with working out how to delete the information.
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u otkrivanju kako da izbrišemo informaciju.
09:25
It was found fairly early on
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Prilično rano je otkriveno
09:27
that a drug widely prescribed to control blood pressure in humans --
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da bi naširoko prepisivani lek koji kontroliše krvni pritisak kod ljudi -
09:31
a beta-blocker called Propranolol --
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betabloker pod nazivom propranolol -
09:33
could be used to prevent the reconsolidation
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mogao da se koristi u sprečavanju rekonsolidacije
09:36
of fear memories in rats.
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sećanja na strah kod pacova.
09:39
If Propranolol was given while the memory was in edit mode,
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Ukoliko dobiju propranolol dok su im sećanja u režimu za redigovanje,
09:42
rats behaved as if they were no longer afraid of a frightening trigger cue.
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pacovi se ponašaju kao da se više ne plaše zastrašujućeg okidajućeg nadražaja.
09:47
It was as if they had never learned to be afraid of that cue.
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Činilo se kao da nikad nisu naučili da se plaše tog nadražaja.
09:52
And this was with a drug that was safe for use in humans.
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A ovo je bilo u slučaju leka koji je bezbedan za ljudsku upotrebu.
09:56
Now, not long after that,
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Sad, nedugo potom,
09:58
it was shown that Propranolol could destroy fear memories in humans as well,
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pokazano je da propranolol može i kod ljudi da uništi sećanja na strah,
10:02
but critically, it only works if the memory is in edit mode.
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ali isključivo deluje ako su sećanja u režimu za redigovanja.
10:08
Now, that study was with healthy human volunteers,
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Istraživanje je obavljeno na zdravim ljudskim volonterima,
10:10
but it's important because it shows that the rat findings
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ali je važno jer pokazuje da ono što je otkriveno za pacove
10:13
can be extended to humans and ultimately, to human patients.
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može da se primeni na ljude i, naposletku, na ljudske pacijente.
10:19
And with humans,
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A kod ljudi
10:21
you can test whether destroying the non-declarative emotional memory
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možete da testirate da li uništavanje nedeklarativnog emocionalnog sećanja
10:25
does anything to the declarative event memory.
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bilo kako utiče na deklaratvino sećanje na događaj.
10:29
And this is really interesting.
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A ovo je uistinu zanimljivo.
10:31
Even though people who were given Propranolol
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Iako se ljudi kojima je dat propranolol
10:34
while the memory was in edit mode
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dok im je sećanje bilo u izmenljivom režimu
10:36
were no longer afraid of that frightening trigger cue,
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više nisu plašili tog zastrašujućeg nadražaja,
10:39
they could still describe the relationship
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i dalje su mogli da objasne vezu
10:42
between the cue and the frightening outcome.
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između nadražaja i zastrašujućeg ishoda.
10:47
It was as if they knew they should be afraid,
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Kao da su znali da bi trebalo da se plaše,
10:51
and yet they weren't.
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ali se ipak nisu plašili.
10:54
This suggests that Propranolol can selectively target
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Ovo nam nagoveštava da propranolol može selektivno da cilja
10:57
the non-declarative emotional memory
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nedeklarativna emocionalna sećanja,
11:00
but leave the declarative event memory intact.
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ali da deklarativna sećanja na događaj ostanu netaknuta.
11:04
But critically, Propranolol can only have any effect on the memory
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Međutim, najvažnije je da propranolol može da utiče na sećanja
11:08
if it's in edit mode.
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samo kada su u režimu za redigovanje.
11:11
So how do we make a memory unstable?
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Dakle, kako da destabilizujemo sećanja?
11:13
How do we get it into edit mode?
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Kako da dođemo do režima za redigovanje?
11:15
Well, my own lab has done quite a lot of work on this.
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Moja laboratorija se bavila mnogo ovime.
11:18
We know that it depends on introducing some but not too much new information
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Znamo da zavisi od uvođenja nekoliko, ali ne previše novih informacija
11:23
to be incorporated into the memory.
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koje treba ugraditi u sećanje.
11:25
We know about the different chemicals the brain uses
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Znamo za različite hemikalije koje mozak koristi
11:28
to signal that a memory should be updated
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da signalizuje da bi sećanje trebalo ažurirati
11:30
and the file edited.
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i redigovati fajl.
11:33
Now, our work is mostly in rats,
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Mi uglavnom radimo sa pacovima,
11:35
but other labs have found the same factors allow memories to be edited in humans,
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ali druge laboratorije su otkrile
da isti faktori omogućuju izmenu sećanja kod ljudi,
11:40
even maladaptive memories like those underlying PTSD.
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čak i maladaptivnih sećanja poput onih koja su u srži PTSP-a.
11:45
In fact, a number of labs in several different countries
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Zapravo, nekoliko laboratorija u nekoliko različitih država je započelo
11:48
have begun small-scale clinical trials of these memory-destroying treatments
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klinička istraživanja manjeg obima ovih tretmana uništavanja sećanja
11:52
for PTSD
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kod PTSP-a
11:54
and have found really promising results.
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i otkrili su uistinu obećavajuće rezultate.
11:57
Now, these studies need replication on a larger scale,
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Ova istraživanja zahtevaju replikaciju na većem nivou,
12:01
but they show the promise of these memory-destroying treatments
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ali deluju obećavajuće za tretmane uništavanja sećanja
12:04
for PTSD.
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kod PTSP-a.
12:06
Maybe trauma memories do not need to be the hell from which we cannot escape.
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Možda traumatična sećanja ne moraju da budu pakao iz kog nam nema bekstva.
12:14
Now, although this memory-destroying approach holds great promise,
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Iako pristup uništavanja sećanja deluje veoma obećavajuće,
12:17
that's not to say that it's straightforward
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ne znači da je jednostavan i lišen kontroverze.
12:20
or without controversy.
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12:22
Is it ethical to destroy memories?
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Da li je etički uništavati sećanja?
12:24
What about things like eyewitness testimony?
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Šta je sa stvarima poput svedočenja očevica?
12:27
What if you can't give someone Propranolol
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Šta ako nekome ne možete da date propranolol
12:29
because it would interfere with other medicines that they're taking?
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zbog uticaja na drugi lek koji ta osoba uzima?
12:33
Well, with respect to ethics and eyewitness testimony,
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U slučaju etike kod svedočenja očevica,
12:36
I would say the important point to remember
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rekla bih da je ključno zapamtiti
12:38
is the finding from that human study.
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otkriće iz istraživanja na ljudima.
12:41
Because Propranolol is only acting on the non-declarative emotional memory,
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Zato što propranolol jedino utiče na nedeklarativna emocionalna sećanja,
12:46
it seems unlikely that it would affect eyewitness testimony,
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ne čini se verovatnim da bi uticao na svedočenje očevica,
12:49
which is based on declarative memory.
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koje je zasnovano na deklarativnom sećanju.
12:52
Essentially, what these memory-destroying treatments
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U suštini, ovi tretmani uništavanja sećanja ciljaju
12:55
are aiming to do
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12:56
is to reduce the emotional memory,
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da umanje emocionalno sećanje,
12:58
not get rid of the trauma memory altogether.
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a ne na sveukupno brisanje traumatičnog sećanja.
13:02
This should make the responses of those with PTSD
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Zbog ovoga bi reakcije osoba sa PTSP-om
13:05
more like those who have been through trauma
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više ličile reakcijama onih koji su preživeli traumu
13:07
and not developed PTSD
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i nisu razvili PTSP,
13:10
than people who have never experienced trauma in the first place.
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nego reakcijama ljudi koji nikad nisu ni doživeli traumu.
13:14
I think that most people would find that more ethically acceptable
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Mislim da će se mnogima ovo učiniti etički prihvatljivije
13:17
than a treatment that aimed to create some sort of spotless mind.
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od tretmana koji bi ciljao na stvaranje nekakvog besprekornog uma.
13:23
What about Propranolol?
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Šta je sa propranololom?
13:25
You can't give Propranolol to everyone,
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Ne možete svakome da date propranolol,
13:27
and not everyone wants to take drugs to treat mental health conditions.
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i ne želi svako da uzima lekove za lečenje mentalnih stanja.
13:31
Well, here Tetris could be useful.
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Pa, tu bi tetris mogao da pomogne.
13:34
Yes, Tetris.
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Da, tetris.
13:37
Working with clinical collaborators,
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Radeći sa kliničkim saradnicima,
13:39
we've been looking at whether behavioral interventions
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posmatrali smo da li bihejvioralne intervencije
13:42
can also interfere with the reconsolidation of memories.
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mogu da posreduju i u slučaju ponovnog integrisanja sećanja.
13:45
Now, how would that work?
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Kako bi to delovalo?
13:47
Well, we know that it's basically impossible
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Dakle, znamo da je praktično nemoguće
13:50
to do two tasks at the same time
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raditi dva zadatka istovremeno,
13:52
if they both depend on the same brain region for processing.
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ukoliko se oba obrađuju u istoj oblasti u mozgu.
13:55
Think trying to sing along to the radio
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Zamislite da pevušite uz radio
13:58
while you're trying to compose an email.
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dok pokušavate da sastavite imejl.
14:00
The processing for one interferes with the other.
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Obrada jednog se meša sa obradom drugog.
14:04
Well, it's the same when you retrieve a memory,
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Isto je i kada vraćate sećanje, naročito u izmenjivom režimu.
14:06
especially in edit mode.
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14:07
If we take a highly visual symptom like flashbacks in PTSD
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Ukoliko uzmete krajnje vizuelan simptom, poput flešbekova kod PTSP-a,
14:11
and get people to recall the memory in edit mode
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i navedete ljude da se prisete sećanja u izmenjivom režimu,
14:15
and then get them to do a highly engaging visual task
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a potom ih navedete da obave krajnje angažovan vizuelni zadatak
14:18
like playing Tetris,
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poput igranja tetrisa,
14:20
it should be possible to introduce so much interfering information
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trebalo bi da je moguće uvesti taman toliko ometajućih informacija
14:24
into that memory
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u to sećanje
14:25
that it essentially becomes meaningless.
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da ono u suštini postane besmisleno.
14:29
That's the theory,
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To je u teoriji
14:30
and it's supported by data from healthy human volunteers.
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i potkrepljeno je podacima od zdravih ljudskih volontera.
14:34
Now, our volunteers watched highly unpleasant films --
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Naši volonteri su gledali krajnje neprijatne filmove -
14:38
so, think eye surgery, road traffic safety adverts,
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dakle, poput operacije na oku, reklama za sigurnost na putu,
14:42
Scorsese's "The Big Shave."
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Skorsezeovo „Veliko brijanje”.
14:44
These trauma films produce something like flashbacks
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Ovi traumatični filmovi uzrokuju nešto nalik flešbekovima
14:48
in healthy volunteers for about a week after viewing them.
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kod zdravih volontera otprilike nedelju dana nakon gledanja.
14:53
We found that getting people to recall those memories,
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Otkrili smo da je navođenje ljudi da se prisete tih sećanja,
14:57
the worst moments of those unpleasant films,
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najgorih trenutaka iz tih neprijatnih filmova,
15:00
and playing Tetris at the same time,
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uz istovremeno igranje tetrisa,
15:02
massively reduced the frequency of the flashbacks.
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uveliko umanjilo učestalost flešbekova.
15:06
And again: the memory had to be in edit mode for that to work.
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Ponavljam, sećanje mora da bude u izmenjivom režimu da bi to delovalo.
15:12
Now, my collaborators have since taken this to clinical populations.
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Moji saradnici su u međuvremenu ovo preneli na kliničku populaciju.
15:15
They've tested this in survivors of road traffic accidents
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Testirali su ovo kod osoba koje su preživele saobraćajne nesreće
15:18
and mothers who've had emergency Caesarean sections,
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i kod majki koje su imale hitni carski rez,
15:22
both types of trauma that frequently lead to PTSD,
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što su dva vida traume koja često vode do PTSP-a,
15:26
and they found really promising reductions in symptoms
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a otkrili su uistinu obećavajuća ublažavanja simptoma
15:29
in both of those clinical cases.
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u oba ova klinička slučaja.
15:33
So although there is still much to learn and procedures to optimize,
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Iako ima još mnogo da se nauči i procedure moraju da se usavrše,
15:37
these memory-destroying treatments hold great promise
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ovi tretmani uništavanja sećanja deluju obećavajuće
15:40
for the treatment of mental health disorders
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u lečenju mentalnih poremećaja
15:43
like PTSD.
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poput PTSP-a.
15:45
Maybe trauma memories do not need to be a hell from which we cannot escape.
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Možda traumatična sećanja ne moraju da budu pakao iz kog nam nema bekstva.
15:51
I believe that this approach
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Verujem da bi ovaj pristup
15:53
should allow those who want to
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trebalo da omogući osobama koje to žele
da u životu okrenu novi list u poglavljima
15:55
to turn the page on chapters of their lives
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15:57
that they would prefer to never have experienced,
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za koja bi voleli da ih nikad nisu iskusili
15:59
and so improve our mental health.
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i da ćemo time unaprediti naše mentalno zdravlje.
16:03
Thank you.
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Hvala vam.
16:04
(Applause)
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(Aplauz)
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