期刊
JOURNAL OF COGNITIVE NEUROSCIENCE
卷 26, 期 9, 页码 2102-2110出版社
MIT PRESS
DOI: 10.1162/jocn_a_00622
关键词
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资金
- Fetzer Institute
- John Templeton Foundation
- John W. Kluge Foundation
- Impact Foundation
- National Institute of Child Health and Human Development [P30 HD03352]
- [P50 MH069315]
- [P50-MH084051]
- [R01 MH043454]
The ability to simultaneously acquire objective physiological measures of emotion concurrent with fMRI holds the promise to enhance our understanding of the biological bases of affect and thus improve our knowledge of the neural circuitry underlying psychiatric disorders. However, the vast majority of neuroimaging studies to date examining emotion have not anchored the examination of emotion-responding circuitry to objective measures of emotional processing. To that end, we acquired EMG activity of a valence-sensitive facial muscle involved in the frowning response (corrugator muscle) concurrent with fMRI while twenty-six human participants viewed negative and neutral images. Trial-by-trial increases in corrugator EMG activity to negative pictures were associated with greater amygdala activity and a concurrent decrease in ventromedial PFC activity. Thus, this study highlights the reciprocal relation between amygdalar and ventromedial PFC in the encoding of emotional valence as reflected by facial expression.
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