How Does Memory Works

Blessings and Curse of Memories.

Nature seems to have invented mechanisms 

for storing memory more than once. For instance, under normal 

circumstances, your memories of daily events are consolidated by  hippocampus. 

But during frightening or intense emotinal situations such as a car accident another area , the amygdala also lays down memories along an independent secondary memory track.Amygdala memories have a different quality to them;they are difficult to erase and 

they can pop back up in "flashbulb" fashion as commonly 

described by rape victims and love failures. In other words, there 

is more than one way to lay down memory. It's not memory of different events, but multiple memories of the 

same event;as though two journalists with different personalities were jotting down notes about a single unfolding story.

There can be a large gap between knowledge and awareness.  Implicit memory is completely separable 

from explicit memory.You can damage one without hurting the 

other. Patient of anterograde amnesia, who cannot 

consciously recall new experiences in their lives,if you spend an afternoon trying to teach them the video game Tetris, they will tell 

you the next day that they have no recollection of the experience that they have never seen this video game before.Most likely

that they have no idea who you are either. But if you look at their performance on the game the next day, you'll find that they have 

improved exactly as much as non amnesiacs.

Implicitly their brains have learned the game.The knowledge is simply not accessible to 

their consciousness. (Interestingly, if you wake up an amnesic patient 

during the night after they've played Tetris, they'll report that they 

were dreaming of colorful falling blocks, but they have no idea)

That's why it's wise to read before you sleep.

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