Corticolimbic mechanisms in emotional decisions

Midline frontolimbic networks are engaged in monitoring simple actions. They may also provide evaluative control for more complex decisions. Subjects read a trait-descriptive word and responded either "yes" or "no" within 1,500 ms whether it was self-descriptive. By 300 ms, an el...

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Published inEmotion (Washington, D.C.) Vol. 3; no. 2; p. 127
Main Authors Tucker, Don M, Luu, Phan, Desmond, Jr, Richard E, Hartry-Speiser, Ann, Davey, Colin, Flaisch, Tobias
Format Journal Article
LanguageEnglish
Published United States 01.06.2003
Subjects
Adult
Brain Mapping
Decision Making - physiology
Dentate Gyrus - physiology
Electroencephalography
Emotions - physiology
Evoked Potentials - physiology
Female
Friends
Frontal Lobe - physiology
Humans
Image Processing, Computer-Assisted
Imaging, Three-Dimensional
Limbic System - physiology
Male
Nerve Net - physiology
Self-Assessment
Semantics
Signal Processing, Computer-Assisted
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Summary:Midline frontolimbic networks are engaged in monitoring simple actions. They may also provide evaluative control for more complex decisions. Subjects read a trait-descriptive word and responded either "yes" or "no" within 1,500 ms whether it was self-descriptive. By 300 ms, an electrophysiological discrimination between good and bad words was seen over centromedial regions of the frontal lobe for both friend and self-decisions. By 350 ms, an interaction effect between evaluation and endorsement appeared, and by 500 ms, activity specific to self-evaluation was seen in both anterior and posterior midline sites. An evaluative decision thus begins by recruiting motivational and semantic influences within limbic networks, and these influences appear to shape the development of the decision within multiple neocortical regions.
ISSN:1528-3542
DOI:10.1037/1528-3542.3.2.127