Suppression of the auditory N1 event-related potential component with unpredictable self-initiated tones
Subtitle
Evidence for internal forward models with dynamic stimulation
Publication date
2008-06-25
Document type
Forschungsartikel
Author
Organisational unit
Universität Leipzig, Institut für Allgemeine Psychologie
ISSN
Series or journal
International journal of psychophysiology
Periodical volume
70
Periodical issue
2
First page
137
Last page
143
Peer-reviewed
✅
Part of the university bibliography
Nein
Keyword
Self-initiated sounds
Auditory cortex
Forward model
Electroencephalography (EEG)
N1
Abstract
Internally operating forward model mechanisms enable the organism to discriminate the sensory consequences of one's own actions from other sensory events. The present event-related potential (ERP) study compared the processing of self-initiated tones with the processing of externally-initiated but otherwise identical tones. In different conditions, frequency and onset of the sound were either predictable or unpredictable. The amplitudes of the N1 component of the ERP for the self-initiated relative to the ones for externally-initiated sounds were significantly attenuated even when the particular frequency or sound onset could not be predicted by the subject. These results support internal forward model mechanisms which dynamically predict the sensorial consequences of ones own motor acts even in face of uncertainties with respect to the frequency of the sound and its onset. Moreover, the attenuation effect was reduced when the frequency was unpredictable suggesting that it is easier to discriminate a self-initiated sound with exact foreknowledge. (© 2008 Elsevier B.V. All rights reserved.)
Version
Published version
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