amnesia

Synopsis: Health: Illness: Nervous disorders: Amnesia:

www.technology.org 2015 08685.txt.txt

#Researchers retrieve ostmemories Retrograde amnesia is the inability to recall established memories. In humans, amnesia is associated with traumatic brain injury, Alzheimer disease,

and other neurological conditions. Whether memories lost to amnesia are erased completely or merely unable to be recalled remains an open question.

Now, in a finding that casts new light on the nature of memory, published in Science,

whose storage was disrupted by chemically inducing retrograde amnesia, could still be recalled. rain researchers have been divided for decades on

whether amnesia is caused by an impairment in the storage of a memory, or in its recall, said Tonegawa.

thus inducing retrograde amnesia. Other mice received saline as a control. As expected, amnestic mice returned to chamber A did not freeze,

despite the induction of retrograde amnesia, the authors suggest that different processes may control memory encoding and recall.

says Tonegawa, s that in retrograde amnesia, past memories may not be erased, but could simply be lost and inaccessible for recall.

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