Dissociable neural responses to facial expressions of sadness and anger

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ID: 295769
1999
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Abstract
Previous neuroimaging and neuropsychological studies have investigated the neural substrates which mediate responses to fearful, disgusted and happy expressions. No previous studies have investigated the neural substrates which mediate responses to sad and angry expressions. Using functional neuroimaging, we tested two hypotheses. First, we tested whether the amygdala has a neural response to sad and/or angry facial expressions. Secondly, we tested whether the orbitofrontal cortex has a specific neural response to angry facial expressions. Volunteer subjects were scanned, using PET, while they performed a sex discrimination task involving static grey-scale images of faces expressing varying degrees of sadness and anger. We found that increasing intensity of sad facial expression was associated with enhanced activity in the left amygdala and right temporal pole. In addition, we found that increasing intensity of angry facial expression was associated with enhanced activity in the orbitofrontal and anterior cingulate cortex. We found no support for the suggestion that angry expressions generate a signal in the amygdala. The results provide evidence for dissociable, but interlocking, systems for the processing of distinct categories of negative facial expression.
Reference Key
openalex_W2142239125 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors James Blair, J S Morris, Chris Frith, David I. Perrett, Raymond J. Dolan
Journal Brain research
Year 1999
DOI
10.1093/brain/122.5.883
URL
https://doi.org/10.1093/brain/122.5.883
Keywords Keywords not found

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