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Scientists monitored brains replaying memories in real time

nih.gov

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Re: Scientists monitored brains replaying memories in real time

#4
post #3

Just to be clear, because the headline is a bit awkward - the scientists didn't replay the memories. There's no device to implant false memories or anything in this article.

Luckily we can already implant false memories with advertising.

https://www.wired.com/2011/05/ads-implant-false-memories/

Re: Scientists monitored brains replaying memories in real time

#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 just does it on a different chemical medium than vinyl.

To me the most magical part is however the brain so deftly places the needle in the right groove as a response to the triggering experience. That seems to go beyond the phonograph metaphor.

Re: Scientists monitored brains replaying memories in real time

#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 sonata clearly as if it was being played in the room.

There must be a way, there’s so many memories I’d like to revisit firsthand, and people I’d like to see again that are no longer with us.

Re: Scientists monitored brains replaying memories in real time

#7
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…

[deleted]

Re: Scientists monitored brains replaying memories in real time

#8
One of the most fascinating things this article claims is that apparently these scientists were able to detect the firing of individual neurons. I have briefly looked up some of the technologies involved in brain scanning before and if this is true it would be greatly exceeding typical resolutions.

Re: Scientists monitored brains replaying memories in real time

#10
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?
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