1: Nat Neurosci. 2004 Nov 21; [Epub ahead of print]
How emotion enhances the feeling of remembering.
Sharot T, Delgado MR, Phelps EA.
Department of Psychology, New York University, Room 863, 6 Washington Place, New York, New York 10003, USA.
Studies examining memories of arousing 'real-life' events show that emotion
heightens the feeling of remembering, without necessarily enhancing the objective
accuracy of the memories. We measured brain activity associated with the feeling
of remembering emotional and neutral photos. Subjects indicated whether recognition
was accompanied by a recollection of details about the study episode ('remember')
or not ('know'). 'Remember' judgments were boosted for emotional photos, but
accuracy did not differ. For neutral photos, 'remember' judgments were related
to enhanced activity in the parahippocampal cortex, previously related to recognition
of visual details, which one might expect to supply the retrieval clues for
a 'remember' judgment. In contrast, 'remember' judgments for emotional photos
were associated with enhanced activity in the amygdala, suggesting that subjects
rely on arousal and perceptual fluency to evaluate these memories. For the first
time, we identify the neural mechanisms underlying the enhanced feeling of remembering
for emotional events.
PMID: 15558065 [PubMed - as supplied by publisher]