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Scientists monitored brains replaying memories in real time

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41–50 of 55 posts

Re: Scientists monitored brains replaying memories in real time

#42
post #5

"NIH researchers found that our brains may store memories in neuronal firing patterns that are replayed fractions of a second before remembering." So it's like a phonograph record. First the track is inscribed from the source sound (storing a memory). Then the needle is placed in a groove (by some triggering experience). Then the needle traverses the inscription, playing back the recording (remembering). The brain ju…

To me, it much more closely resembles a key-value retrieval system. I wonder if we could learn anything about that by training an artificial neural net to perform key-value storage?

I’ve been saying for years that it’s like a hashtable, where the key itself is hashed in a predictable quickly retrievable pattern or namespace

This article does not invalidate the idea

Re: Scientists monitored brains replaying memories in real time

#43
post #2

What a timely article, as I JUST watched Brainstorm for the first time tonight. The story is exactly this.

Movies like "Brainstorm": "The Final Cut" "Strange Days" "Total Recall" "Altered States" "Lawnmower Man" "Ex Machina" "The Thirteenth Floor" "The Truman Show" "Inception" "Selfless" "Flatliners"

also wim wenders' "Until The End of the World"

Re: Scientists monitored brains replaying memories in real time

#44
post #21

How long until we see the headline “Summons allows court to monitor brains replaying memories in real time”

It will never be easy. This kind of tech will rely on the subjects thinking of that memory. And you can always, well, choose not to. Or even corrupt the memory deliberately by imagining things.

You don't choose anything. I'm finding it hard that anyone can think otherwise with research such as the article indicating function before awareness.

Re: Scientists monitored brains replaying memories in real time

#45

Earlier quoted context omitted.

Isn't it very hard to "not think about it" when required to not think about it ?

It's a skill that you can practice through meditation. But false-memories and fabricated memories will shoot this idea down long before that stuff comes into play. Memory is no where near reliable enough to be used as evidence like that.

Witness statements are used right now, and they're memory filtered through people's perceptions and desires; potentially way worse.

Re: Scientists monitored brains replaying memories in real time

#46
post #9
post #2

What a timely article, as I JUST watched Brainstorm for the first time tonight. The story is exactly this.

Probably not a coincidence

Well, considering it's been in my Netflix DVD queue for years, and it just happened to be next in line. Pretty big coincidence!

Re: Scientists monitored brains replaying memories in real time

#47
post #5

"NIH researchers found that our brains may store memories in neuronal firing patterns that are replayed fractions of a second before remembering." So it's like a phonograph record. First the track is inscribed from the source sound (storing a memory). Then the needle is placed in a groove (by some triggering experience). Then the needle traverses the inscription, playing back the recording (remembering). The brain ju…

To me, it much more closely resembles a key-value retrieval system. I wonder if we could learn anything about that by training an artificial neural net to perform key-value storage?

It's odd, because it very much resembles relational memory for me. I can summon no memory just by it's name, only from it's association. The space for sole base values is very limited. The plus side is that i can generally remember every caveat and detail there is to doing a thing once I've seen it once.

Re: Scientists monitored brains replaying memories in real time

#48
post #18

There is a theory on how memories are formed on neural networks through cycles of firings by an artificial intelligence pioneer. I’ve searched for it again to no avail. Is there such a theory by Minsky?

I think a memory is not just repetition, but collision of different paths that lead to permanent memories

Re: Scientists monitored brains replaying memories in real time

#49
post #5

"NIH researchers found that our brains may store memories in neuronal firing patterns that are replayed fractions of a second before remembering." So it's like a phonograph record. First the track is inscribed from the source sound (storing a memory). Then the needle is placed in a groove (by some triggering experience). Then the needle traverses the inscription, playing back the recording (remembering). The brain ju…

I wonder if you could measure someone remembering an incident, and then measure them remembering the same incident but with different imagined outcomes to find a sort of style gan embedding space for qualities of the memory?

Re: Scientists monitored brains replaying memories in real time

#50
post #6

I’ve always wondered if there is a way to stimulate a brain so that you could replay a memory so vividly that it practically feels like you are there reliving it again, like the way you might experience a dream but with more clarity, almost like a form of time travel. I remember reading about some experiment in a psychology class where an old woman’s brain was probed and she was able to hear her highschool graduation…

Take some ketamine :) ... I'm stating this as someone with first hand experience, so it may seem hand wavy and "made up": memories are visual and those visuals directly trigger your nervous system which then responds and often impacts the visual memory replay (often cutting it off or moving to something else). Your nervous system is also constantly telling your visual system what to "lookup". Ketamine dissociates the nervous system from visual memory so you can sort of play the memory through like a spectator. I think this is why it is so effective at treating things like PTSD -- the memories are often so frightening or triggering to the nervous system that they cannot be replayed, understood and integrated... but with Ketamine cutting off the nervous system they can be understood without a panic attack or heart rate shooting through the roof.
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