Selective suppression of self-initiated sounds in an auditory stream: An ERP study

Numerous studies have shown that the N1 event‐related potential (ERP) response is attenuated when it is elicited by self‐initiated sounds. This N1 suppression effect is generally interpreted to reflect an internal prediction mechanism, which enables the discrimination of the sensory consequences of...

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Bibliographic Details
Published in:Psychophysiology 2011-09, Vol.48 (9), p.1276-1283
Main Authors: Baess, Pamela, Horváth, János, Jacobsen, Thomas, Schröger, Erich
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adult
Auditory discrimination
Auditory evoked potentials
Auditory Perception - physiology
Cerebral Cortex - physiology
Cognition
Cognition & reasoning
Ears & hearing
EEG/ERP
Electroencephalography
Event-related potentials
Evoked Potentials - physiology
Female
Humans
Information processing
Male
Normal volunteers
Physiological psychology
Repression, Psychology
Sensation/perception
Sensory perception
Streams
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Summary:Numerous studies have shown that the N1 event‐related potential (ERP) response is attenuated when it is elicited by self‐initiated sounds. This N1 suppression effect is generally interpreted to reflect an internal prediction mechanism, which enables the discrimination of the sensory consequences of our own actions and those of others. The blocked design used in the forerunner studies (i.e., self‐ and externally initiated sounds presented in different blocks) seriously limits the relevance of these findings, because the N1 effect can simply be explained by contextual task differences. In the present study, self‐ and externally initiated sounds were mixed within blocks. N1 suppression was found, and its magnitude was even larger than that observed in a traditional blocked condition. This result supports the involvement of an internal prediction mechanism in the discrimination of the sensory consequences of one's own actions and those of others.
ISSN:0048-5772
1469-8986
1540-5958
DOI:10.1111/j.1469-8986.2011.01196.x