Research article summary (published 3 Aug 2009):

Event-related potential correlates of the extraverts' sensitivity to valence changes in positive stimuli.

Full Abstract

This study investigated whether the human sensitivity to valence intensity changes in positive stimuli varies with extraversion. Event-related potentials were recorded for highly positive, moderately positive, and neutral stimuli while participants (extraverts and nonextraverts) performed a standard/deviant categorization task, irrespective of the emotionality of deviants. The results of extraverts showed larger P2 and P3 amplitudes during highly positive condition than during moderately positive condition which, in turn, elicited larger P2 than neutral condition. Conversely, nonextraverts showed no differences at both P2 and P3 components. Thus, extraverts, unlike less extraverted individuals, are sensitive to valence changes in positive stimuli, which may be underlain by certain biogenetic mechanism.

Author information

Author/s: Yuan, Jiajin (J); He, Yuanyuan (Y); Lei, Yi (Y); Yang, Jiemin (J); Li, Hong (H);

Affiliation: Key Laboratory of Cognition and Personality, Ministry of Education, Southwest University, Chongqing, China. yuan_jiajin(-atsign-)126.com

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Neuroreport (Neuroreport), published in England. (Language: eng)

Reference: 2009-Aug; vol 20 (issue 12) : pp 1071-6

Dates: Created 2009/07/10; Completed 2009/09/29;

PMID: 19543131, status: MEDLINE (last retrieval date: 9/29/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Adult Analysis of Variance Attention - physiology Brain - physiology Electroencephalography Emotions - physiology Evoked Potentials Extraversion (Psychology) Female

Female Humans Male Mental Processes - physiology Neuropsychological Tests Photic Stimulation Reaction Time Time Factors Visual Perception - physiology Young Adult

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