Impaired implicit memory for gist information in amnesia.
In 2 experiments using a converging associates paradigm, the authors evaluated implicit memory for gist information in amnesic patients. In Experiment 1, participants saw multiple sets of associates, each converging on a nonpresented theme word, and were then tested using an implicit word stem completion test and an explicit cued recall test. Amnesic patients showed intact implicit and impaired explicit memory for studied words, but memory for nonpresented lures was impaired, regardless of retrieval instructions. To evaluate whether impaired implicit memory for lures was due to accelerated forgetting of gist information, short study lists were used in Experiment 2, each consisting of a single set of associates. Amnesics' implicit memory for lures was again impaired. These results point to an inability to encode robust gist representations as the cause of impaired gist memory in amnesia.
Verfaellie
Mieke
M
Memory Disorders Research Center, Boston University School of Medicine and Boston VA Healthcare System, MA 02130, USA. verf@bu.edu
Page
Katie
K
Orlando
Frances
F
Schacter
Daniel L
DL
D000368:Aged; D000647:Amnesia / Q000503:physiopathology*; D000704:Analysis of Variance; D003210:Concept Formation / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008569:Memory Disorders / Q000503:physiopathology*; D011939:Mental Recall / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D010153:Paired-Associate Learning / Q000502:physiology; D014936:Word Association Tests / Q000706:statistics & numerical data