Tags

Type your tag names separated by a space and hit enter

Arousal and valence effects on event-related P3a and P3b during emotional categorization.
Int J Psychophysiol. 2006 Jun; 60(3):315-22.IJ

Abstract

Due to the adaptive value of emotional situations, categorizing along the valence dimension may be supported by critical brain functions. The present study examined emotion-cognition relationships by focusing on the influence of an emotional categorization task on the cognitive processing induced by an oddball-like paradigm. Event-related potentials (ERPs) were recorded from subjects explicitly asked to categorize along the valence dimension (unpleasant, neutral or pleasant) deviant target pictures embedded in a train of standard stimuli. Late positivities evoked in response to the target pictures were decomposed into a P3a and a P3b and topographical differences were observed according to the valence content of the stimuli. P3a showed enhanced amplitudes at posterior sites in response to unpleasant pictures as compared to both neutral and pleasant pictures. This effect is interpreted as a negativity bias related to attentional processing. The P3b component was sensitive to the arousal value of the stimulation, with higher amplitudes at several posterior sites for both types of emotional pictures. Moreover, unpleasant pictures evoked smaller amplitudes than pleasant ones at fronto-central sites. Thus, the context updating process may be differentially modulated by the affective arousal and valence of the stimulus. The present study supports the assumption that, during an emotional categorization, the emotional content of the stimulus may modulate the reorientation of attention and the subsequent updating process in a specific way.

Authors+Show Affiliations

Neurosciences Cognitives, Bât SN4.1, Université de Lille 1, Villeneuve d'Ascq, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16226819

Citation

Delplanque, Sylvain, et al. "Arousal and Valence Effects On Event-related P3a and P3b During Emotional Categorization." International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, vol. 60, no. 3, 2006, pp. 315-22.
Delplanque S, Silvert L, Hot P, et al. Arousal and valence effects on event-related P3a and P3b during emotional categorization. Int J Psychophysiol. 2006;60(3):315-22.
Delplanque, S., Silvert, L., Hot, P., Rigoulot, S., & Sequeira, H. (2006). Arousal and valence effects on event-related P3a and P3b during emotional categorization. International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, 60(3), 315-22.
Delplanque S, et al. Arousal and Valence Effects On Event-related P3a and P3b During Emotional Categorization. Int J Psychophysiol. 2006;60(3):315-22. PubMed PMID: 16226819.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Arousal and valence effects on event-related P3a and P3b during emotional categorization. AU - Delplanque,Sylvain, AU - Silvert,Laetitia, AU - Hot,Pascal, AU - Rigoulot,Simon, AU - Sequeira,Henrique, Y1 - 2005/10/13/ PY - 2004/08/17/received PY - 2004/10/27/revised PY - 2005/06/30/accepted PY - 2005/10/18/pubmed PY - 2006/11/2/medline PY - 2005/10/18/entrez SP - 315 EP - 22 JF - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JO - Int J Psychophysiol VL - 60 IS - 3 N2 - Due to the adaptive value of emotional situations, categorizing along the valence dimension may be supported by critical brain functions. The present study examined emotion-cognition relationships by focusing on the influence of an emotional categorization task on the cognitive processing induced by an oddball-like paradigm. Event-related potentials (ERPs) were recorded from subjects explicitly asked to categorize along the valence dimension (unpleasant, neutral or pleasant) deviant target pictures embedded in a train of standard stimuli. Late positivities evoked in response to the target pictures were decomposed into a P3a and a P3b and topographical differences were observed according to the valence content of the stimuli. P3a showed enhanced amplitudes at posterior sites in response to unpleasant pictures as compared to both neutral and pleasant pictures. This effect is interpreted as a negativity bias related to attentional processing. The P3b component was sensitive to the arousal value of the stimulation, with higher amplitudes at several posterior sites for both types of emotional pictures. Moreover, unpleasant pictures evoked smaller amplitudes than pleasant ones at fronto-central sites. Thus, the context updating process may be differentially modulated by the affective arousal and valence of the stimulus. The present study supports the assumption that, during an emotional categorization, the emotional content of the stimulus may modulate the reorientation of attention and the subsequent updating process in a specific way. SN - 0167-8760 UR - https://www.unboundmedicine.com/medline/citation/16226819/Arousal_and_valence_effects_on_event_related_P3a_and_P3b_during_emotional_categorization_ DB - PRIME DP - Unbound Medicine ER -