Memory Regression

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Memory regression is characterized by the perception of one or more headmates reverting to older memories, like they just happened.

The brain may also adjust itself to the age of the old memories, causing age regression.

The lost memories may or may not come back in the future.

Related terms
Isomorphic regression is very similar to memory regression - but the memory will not lost, it is "flipped" with the aspect.

Memory regression or similar phenomena may occur during flashbacks.