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Affective picture processing: The late positive potential is modulated by motivational relevance

Published online by Cambridge University Press:  01 March 2000

HARALD T. SCHUPP ,
BRUCE N. CUTHBERT ,
MARGARET M. BRADLEY ,
JOHN T. CACIOPPO ,
TIFFANY ITO  and
PETER J. LANG
HARALD T. SCHUPP
Affiliation:
NIMH, Center for the Study of Emotion and Attention, University of Florida, Gainesville, USA
BRUCE N. CUTHBERT
Affiliation:
NIMH, Center for the Study of Emotion and Attention, University of Florida, Gainesville, USA
MARGARET M. BRADLEY
Affiliation:
NIMH, Center for the Study of Emotion and Attention, University of Florida, Gainesville, USA
JOHN T. CACIOPPO
Affiliation:
Department of Psychology, University of Chicago, Chicago, Illinois, USA
TIFFANY ITO
Affiliation:
Department of Psychology, University of Colorado, Boulder, USA
PETER J. LANG
Affiliation:
NIMH, Center for the Study of Emotion and Attention, University of Florida, Gainesville, USA
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Abstract

Recent studies have shown that the late positive component of the event-related-potential (ERP) is enhanced for emotional pictures, presented in an oddball paradigm, evaluated as distant from an established affective context. In other research, with context-free, random presentation, affectively intense pictures (pleasant and unpleasant) prompted similar enhanced ERP late positivity (compared with the neutral picture response). In an effort to reconcile interpretations of the late positive potential (LPP), ERPs to randomly ordered pictures were assessed, but using the faster presentation rate, brief exposure (1.5 s), and distinct sequences of six pictures, as in studies using an oddball based on evaluative distance. Again, results showed larger LPPs to pleasant and unpleasant pictures, compared with neutral pictures. Furthermore, affective pictures of high arousal elicited larger LPPs than less affectively intense pictures. The data support the view that late positivity to affective pictures is modulated both by their intrinsic motivational significance and the evaluative context of picture presentation.

Keywords

EmotionERPAffective evaluationLate positive potentialSlow waveMotivated attention
Type
BRIEF REPORT
Information
Psychophysiology , Volume 37 , Issue 2 , March 2000 , pp. 257 - 261
Copyright
© 2000 Society for Psychophysiological Research

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