DMCA
Masked presentations of emotional facial expressions modulate amygdala activity without explicit knowledge (1998)
| Venue: | Journal of Neuroscience |
| Citations: | 359 - 3 self |
BibTeX
@ARTICLE{Whalen98maskedpresentations,
author = {Paul J. Whalen and Scott L. Rauch and Nancy L. Etcoff and Sean C. Mcinerney and Michael B. Lee and Michael A. Jenike},
title = {Masked presentations of emotional facial expressions modulate amygdala activity without explicit knowledge},
journal = {Journal of Neuroscience},
year = {1998},
pages = {411--418}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Functional magnetic resonance imaging (fMRI) of the human brain was used to study whether the amygdala is activated in response to emotional stimuli, even in the absence of explicit knowledge that such stimuli were presented. Pictures of human faces bearing fearful or happy expressions were presented to 10 normal, healthy subjects by using a backward masking procedure that resulted in 8 of 10 subjects reporting that they had not seen these facial expressions. The backward masking procedure consisted of 33 msec presentations of fearful or happy facial expressions, their offset coincident with the onset of 167 msec presentations of neutral facial expressions. Although subjects reported seeing only neutral faces, blood oxygen level-dependent (BOLD) fMRI signal in the amygdala was significantly higher during viewing of masked fearful faces than during the viewing of masked happy faces. This difference was
Keyphrases
explicit knowledge masked presentation emotional facial expression amygdala activity msec presentation backward masking procedure functional magnetic resonance imaging blood oxygen level-dependent happy facial expression healthy subject neutral facial expression human brain happy expression emotional stimulus facial expression
