Journal
EMOTION
Volume 5, Issue 2, Pages 200-207Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/1528-3542.5.2.200
Keywords
emotion; positive affect; dorsolateral prefrontal cortex; functional MRI; brain asymmetry
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Funding
- NIDA NIH HHS [R21 DA14111] Funding Source: Medline
- NIMH NIH HHS [R01 MH61358, T32 MH14257, 1T32 MH19554] Funding Source: Medline
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Functional MRI (fMRI) was used to examine the relationship bemeen processing, of pleasant and unpleasant stimuli and activity in prefrontal cortex. Twenty volunteers identified the colors in which pleasant, neutral, and unpleasant words were printed, Pleasant words prompted more actin it bilaterally in dorsolateral prefrontal cortex (tDLPFC) than did unpleasant words, In addition, pleasant words prompted more activity in left than in right DLPFC. Response speed to pleasant words was correlated with DLPFC activity. These data directly link positive affect. enhanced and prefrontal activity, providing some of the first fMRI evidence supporting models of emotional valence and frontal brain asymmetry based on electroencephalography (EEG).
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