MMN or no MMN: no magnitude of deviance effect on the MMN amplitude
Publication date
2007-09-17
Document type
Forschungsartikel
Author
Organisational unit
Universität Leipzig, Institut für Allgemeine Psychologie
Publisher
Wiley-Blackwell
Series or journal
Psychophysiology
ISSN
Periodical volume
45
Periodical issue
1
First page
60
Last page
69
Peer-reviewed
✅
Part of the university bibliography
Nein
Language
English
Keyword
Event-related potential (ERP)
N1
Magnitude of deviance
Frequency change
Auditory change detection
Stimulus representation
Memory updating
Attention switching
Abstract
Based on results showing that the “deviant‐minus‐standard” estimate of the mismatch negativity (MMN) amplitude increases with increasing amounts of deviance, it has been suggested that the MMN amplitude reflects the amount of difference between the neural representations of the standard and the deviant sound. However, the deviant‐minus‐standard waveform also includes an N1 difference. We tested the effects of the magnitude of deviance on MMN while minimizing this N1 confound. We found no significant magnitude of deviance effect on the genuine MMN amplitude. Thus we suggest that the average MMN amplitude does not reflect the difference between neural stimulus representations; rather it may index the percentage of detected deviants, each of which elicits an MMN response of uniform amplitude. These results are compatible with an explanation suggesting that MMN is involved in maintaining a neural representation of the auditory environment.
Version
Published version
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