Journal
PSYCHOLOGICAL SCIENCE
Volume 21, Issue 7, Pages 901-907Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0956797610373934
Keywords
low spatial frequencies; ambiguity; facial expressions; amygdala
Categories
Funding
- NIMH NIH HHS [R01 MH080716-04, R01 MH080716] Funding Source: Medline
- PHS HHS [080716] Funding Source: Medline
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Low-spatial-frequency (LSF) visual information is processed in an elemental fashion before a finer analysis of high-spatial-frequency information. Further, the amygdala is particularly responsive to LSF information contained within negative (e. g., fearful) facial expressions. In a separate line of research, it has been shown that surprised facial expressions are ambiguous in that they can be interpreted as either negatively or positively valenced. More negative interpretations of surprise are associated with increased ventral amygdala activity. In this report, we show that LSF presentations of surprised expressions bias the interpretation of surprised expressions in a negative direction, a finding suggesting that negative interpretations are first and fast during the resolution of ambiguous valence. We also examined the influence of subjects' positivity-negativity bias on this effect.
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