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In Brain’s Electrical Ripples, Markers for Memories Appear (quantamagazine.org)
59 points by theafh 72 days ago | hide | past | web | favorite | 6 comments

I've been thinking of long term memory as hashmaps, with the values themselves being multiple specific neurons firing and also at a specific frequency, which would be easier to store in great abundance to reuse resources.

the keys being just a bunch of pointers somehow. neurons could also have modes to being part of the key storage, and then switching modes to value recovery

Episodic recollection is generally thought of as a partial reinstatement of the brain state that had occurred during memory encoding. The dentate of the hippocampal formation is theorized to perform pattern separation of inputd that results in a sparse represntation of that brain state. A memory cue in the environment elicits a partial matching representation which can initiate pattern completion in the heavily recurrent area cornu ammonis 3, which is downstream from the dentate. This pattern completion event back projects signals to the cortex etc to reinstate the encoded mental state, resulting in a sometimes vivid recollection, or reliving of an event. Of course it is all hopelessly more complex than this.

My ability to recall is quite terrible and has been all of my life. However, after I started listening to podcasts I noticed that if I re-listened to a portion of an episode, I would get highly visual and intrusive memories of what I was doing the last time I heard the podcast. To the point where I could recall things like shifting my gaze and even to some extent what I was thinking at the time.

I wonder if the podcast is helping me structure the encoding of the memory or if it's always there and the podcast is helping me recall it, but it's very trippy.

I remember all events as they happen along with their order but I never manage to memorize the date or time of events.

And my wife is always amazed how I can remember everything.

She only remembers what she felt that day, not what actually happened.

You are completely wrong. The brain doesn't hold any kind of address table to "lookup" neurons. The brain is a self organizing system.

The theory isn't that the neurons are being looked up, its that data patterns are.

Any studies on this structure where either the hypothesis or conclusion evaluated this?

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