False recollection of emotional pictures in Alzheimer's disease

NEUROPSYCHOLOGIA

卷:48

Article

Gallo, David A.^1,2  Foster, Katherine T.¹  Wong, Jessica T.¹  Bennett, David A.^3,4 

[1] Univ Chicago, Dept Psychol, Chicago, IL 60637 USA

[2] Univ Chicago, Ctr Cognit & Social Neurosci, Chicago, IL 60637 USA

[3] Rush Univ, Med Ctr, Dept Neurol Sci, Chicago, IL USA

[4] Rush Alzheimers Dis Ctr, Chicago, IL 60612 USA

关键词: False memory;    Emotion;    Alzheimer s disease;   

DOI  :  10.1016/j.neuropsychologia.2010.08.011

来源: Elsevier

【 摘 要 】

Alzheimer's Disease (AD) can reduce the effects of emotional content on memory for studied pictures, but less is known about false memory. In healthy adults, emotionally arousing pictures can be more susceptible to false memory effects than neutral pictures, potentially because emotional pictures share conceptual similarities that cause memory confusions. We investigated these effects in AD patients and healthy controls. Participants studied pictures and their verbal labels, and then picture recollection was tested using verbal labels as retrieval cues. Some of the test labels had been associated with a picture at study, whereas other had not. On this picture recollection test, we found that both AD patients and controls incorrectly endorsed some of the test labels that had not been studied with pictures. These errors were associated with medium to high levels of confidence, indicating some degree of false recollection. Critically, these false recollection judgments were greater for emotional compared to neutral items, especially for positively valenced items, in both AD patients and controls. Dysfunction of the amygdala and hippocampus in early AD may impair recollection, but AD did not disrupt the effect of emotion on false recollection judgments. (C) 2010 Elsevier Ltd All rights reserved

【 授权许可】

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