Amnesia and memory for visual location.

Abstract Short-term memory and long-term memory for visual stimuli not readily verbalisable were studied in amnesic patients. Decay functions for recall of the location of a single dot stimulus over retention intervals of 0–60 sec were measured in a group of 7 amnesic subjects and 6 matched controls. Recall of the location of 5 randomly positioned dots after 10 learning trials was tested using a 2 min retention interval. It was found that the amnesic patients' performance was not significantly worse on the former, S.T.M. task but showed a significant deficit on the latter, L.T.M. task. in addition, three patients with a selective impairment of auditory verbal S.T.M. were tested. The findings are discussed in relation to comparable tasks of verbal S.T.M. and L.T.M.

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