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Neural substrates associated with evaluative processing during co-activation of positivity and negativity: A PET investigation

Authors
 Young Chul Jung  ;  Suk Kyoon An  ;  Jeong Ho Seok  ;  Jae Seung Kim  ;  Seung Jun Oh  ;  Dae Hyuk Moon  ;  Jae-Jin Kim 
Citation
 BIOLOGICAL PSYCHOLOGY, Vol.73(3) : 253-261, 2006 
Journal Title
BIOLOGICAL PSYCHOLOGY
ISSN
 0301-0511 
Issue Date
2006
MeSH
Adult ; Affect/physiology* ; Arousal/physiology ; Brain/diagnostic imaging ; Brain/physiology ; Brain Mapping ; Dominance, Cerebral/physiology* ; Emotions/physiology ; Female ; Humans ; Male ; Nerve Net/diagnostic imaging ; Nerve Net/physiology ; Pattern Recognition, Visual/physiology* ; Positron-Emission Tomography* ; Prefrontal Cortex/diagnostic imaging ; Prefrontal Cortex/physiology* ; Reaction Time/physiology ; Reading* ; Reference Values ; Semantics*
Keywords
Positivity offset ; Negativity bias ; Dorsolateral prefrontal cortex ; PET
Abstract
Affective symmetries, such as the positivity offset and negativity bias, have been postulated to be attributable to distinct activation functions of the positive and negative affect systems. We investigated the neural substrates that are engaged when the positive and negative affect systems undergo parallel and integrative processing. Eleven subjects were scanned using H215O PET during choosing the subjective feeling produced by a stimulation pair of pictures or words. Four different conditions were designed for contrast: pure positivity, pure negativity, positivity offset, and negativity bias. The dorsolateral prefrontal activation was associated with positivity offset and negativity bias condition, whereas the ventromedial prefrontal activation, together with limbic and subcortical activations, was associated with pure positivity and pure negativity condition. The results indicated that positivity offset and negativity bias are not merely due to asymmetric activations of the positive and negative systems, but integrative processing of higher neocortical levels is involved.
Full Text
http://www.sciencedirect.com/science/article/pii/S0301051106001359
DOI
10.1016/j.biopsycho.2006.04.006
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jae Jin(김재진) ORCID logo https://orcid.org/0000-0002-1395-4562
An, Suk Kyoon(안석균) ORCID logo https://orcid.org/0000-0003-4576-6184
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/110364
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