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Brain Cogn. 1997 Jul;34(2):189-206.

Confabulation, memory deficits, and frontal dysfunction.

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Memory Disorders Research Center, Boston University, USA.


This paper explores potential cognitive deficits underlying confabulation of patient, G.S., following an anterior communication artery aneurysm. G.S.'s performance on tasks assessing memory for temporal duration, temporal order, and speaker identification is examined as is his recollection of autobiographical events. We compare G.S. with three nonconfabulating patients matched with him for age, education, and neuropsychological measures of memory and frontal deficits and with three age- and education-matched control subjects. Like frontal control patients, G.S. underestimated temporal durations and showed poor source monitoring (speaker identification). In addition, G.S. showed an even more pronounced deficit in recall of autobiographical memories and relatively more detailed reports of laboratory-induced memories for imagined events. We suggest that this configuration of deficits rather than any single factor accounts for G.S.'s tendency to confabulate.

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