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amnesia

amnesia (am-ne´ze-a)

A disturbance in the memory of information stored in long-term memory, in contrast to short-term memory, manifested by total or partial inability to recall past experiences. [G. amnesia, forgetfulness]
anterograde a. a. in reference to events occurring after the trauma or disease that caused the condition.
emotional a. a numbness of feeling and emotion whose etiology is psychological.
lacunar a. , localized a. a. in reference to isolated events.
posthypnotic a. selective forgetting, after a hypnotic state, of events occurring during hypnosis or of information stored in long-term memory, such as one's name, address, and names of relatives.
retrograde a. a. in reference to events that occurred before the trauma or disease that caused the condition.
transient global a. a memory disorder seen in middle aged and elderly persons characterized by an episode of a. and bewilderment which persists for several hours; during the episode the patient has a memory defect for present and recent past events, but is fully alert, oriented, capable of high-level intellectual activity, and has a normal neurological examination. Typically, these amnesic episodes occur spontaneously, and most patients experience only one; of uncertain etiology-probably ischemic, but not due to atherosclerosis.
traumatic a. the loss or disturbance of memory following an insult or injury to the brain of the type that accompanies a head injury, or excessive use of alcohol, or following the cessation of alcohol ingestion or other psychoactive drugs; or loss or disturbance of memory of the type seen in hysteria and other forms of dissociative disorders.

 

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