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Affective visual event-related potentials: arousal, repetition, and time-on-task
Umeå University, Faculty of Social Sciences, Department of Psychology.
Molecular and Integrative Neurosciences Department, The Scripps Research Institute, La Jolla, CA, USA.
2007 (English)In: Biological Psychology, ISSN 0301-0511, E-ISSN 1873-6246, Vol. 75, no 1, 101-108 p.Article in journal (Refereed) Published
Abstract [en]

Affective stimulus pictures that differed in valence (unpleasant, neutral, and pleasant) were repeated as targets in an oddball task to elicit event-related potentials (ERPs) in young female adults. Each picture target was repeated consecutively four times, with picture order counterbalanced and time-on-task influences assessed across subjects. Response time decreased from the first to second stimulus presentation and remained stable. Stimulus repetition was associated with voltage increases for N1, P2, N2, and P3, from initial to subsequent presentations. Arousal effects did not interact with stimulus repetition at any latency range. Time-on-task was associated with decreased voltages for the N2 and P3 potentials but was unaffected by stimulus valence. The findings suggest affective arousal, stimulus repetition, and time-on-task independently modulate ERP outcomes at overlapping time ranges. Theoretical implications are discussed.

Place, publisher, year, edition, pages
Amsterdam: North-Holland , 2007. Vol. 75, no 1, 101-108 p.
Keyword [en]
Affect, Emotion, Arousal, Habituation, Event-related potentials
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:umu:diva-7945DOI: 10.1016/j.biopsycho.2006.12.006OAI: oai:DiVA.org:umu-7945DiVA: diva2:147616
Available from: 2008-01-23 Created: 2008-01-23 Last updated: 2011-06-22Bibliographically approved

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Olofsson, Jonas

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