Abstract:
:Central nervous system habituation in humans was studied using functional magnetic resonance imaging and repeated presentations of single fearful and neutral faces. Habituation of blood-oxygenation-level-dependent (BOLD) signal during exposure to face stimuli, collapsed over fearful and neutral expressions, was evident in the right amygdala and hippocampus, as well as in the medial/inferior temporal cortex bilaterally. In the hippocampus, significantly greater habituation was evident on the right as compared to the left side, which could reflect the visual nature of the stimuli. There were no time by expression interaction effects in these regions, suggesting similar neural attenuation rates to fearful and neutral face stimuli. These results indicate that brain regions involved in novelty detection and memory processing habituate at similar rates regardless of whether the face in focus displays an aversive emotional expression or not.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Fischer H,Wright CI,Whalen PJ,McInerney SC,Shin LM,Rauch SLdoi
10.1016/s0361-9230(02)00940-1keywords:
subject
Has Abstractpub_date
2003-01-30 00:00:00pages
387-92issue
5eissn
0361-9230issn
1873-2747pii
S0361923002009401journal_volume
59pub_type
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