Multiple P3s to Emotional Stimuli and Their Theoretical Significance

ABSTRACT Event‐related potentials (ERPs) were recorded to both predictive (consonant‐vowel‐consonant) and feedback (picture) stimuli as subjects learned associations between these stimuli. The consonantvowel‐consonants (CVCs) were selected for lack of emotional content while the pictures (PICs) vari...

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Bibliographic Details
Published in:Psychophysiology 1986-11, Vol.23 (6), p.684-694
Main Authors: Johnston, Victor S., Miller, David R., Burleson, Mary H.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Association Learning - physiology
Behavioral psychophysiology
Biological and medical sciences
Cognition - physiology
Emotion
Emotions - physiology
Event-related potentials
Evoked Potentials, Visual
Female
Fundamental and applied biological sciences. Psychology
Humans
Learning
Learning - physiology
Male
Neurons - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Sex Factors
Slow wave
Utility
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Summary:ABSTRACT Event‐related potentials (ERPs) were recorded to both predictive (consonant‐vowel‐consonant) and feedback (picture) stimuli as subjects learned associations between these stimuli. The consonantvowel‐consonants (CVCs) were selected for lack of emotional content while the pictures (PICs) varied in emotional value (Learning Group; N=20). A second group of subjects was exposed to the same CVC‐PIC stimuli but was required only to count the number of different CVCs and PICs (Counting Group; N=20). A principal components analysis with varimax rotation was performed on ERPs to PICs and revealed multiple late positive components (P3 and P4) and a slow positive wave (SPW). In both groups, the P3 and P4 factors varied with the emotional value of the stimuli. The learning group had a larger SPW than the counting group, and disconfirmed predictions elicited larger P4s than confirmed predictions. For CVC stimuli, only P4 increased as subjects learned CVC‐PIC relationships. From the similar scalp and temporal distributions of P3 and P4, as well as their functional similarity, it was concluded that these two factors reflect the same neural process which is activated by the emotional value of stimuli. One possible function of this process is suggested.
ISSN:0048-5772
1469-8986
1540-5958
DOI:10.1111/j.1469-8986.1986.tb00694.x