#amnesia__memory_loss__blackout  partial or total loss of memory: "he has a total blackout for events of the evening"
  supertype:  cognitive_state__cognitivestate__state_of_mind  the state of a person's cognitive processes
  subtype:  anterograde_amnesia__anterogradeamnesia__posttraumatic_amnesia__posttraumaticamnesia  loss of memory for events immediately following a trauma; sometimes in effect for events during and for a long time following the trauma
  subtype:  retrograde_amnesia  loss of memory for events immediately preceding a trauma
  subtype:  forgetfulness__forgetfulnes  tendency to forget
  subtype:  selective_amnesia__selectiveamnesia  amnesia about particular events that is very convenient for the person who cannot remember; "why do politicians always develop selective amnesia when questioned about their transgressions?"
     subtype:  posthypnotic_amnesia  selective amnesia after being in a hypnotic state of events occurring during hypnosis or of information designated by the hypnotist
  subtype:  transient_global_amnesia  memory disorder seen in middle aged and elderly persons; characterized by an episode of amnesia and bewilderment that lasts for several hours; person is otherwise alert and intellectually active

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