Asymmetrical mismatch negativity in humans as determined by phonetic but not physical difference

A two-tone oddball procedure was employed to examine the effect of a phonemic category on the mismatch negativity (MMN). One of the stimuli was a phoneme prototype of Japanese /e/, and the other, [e/ö], which was perceived by Japanese participants as showing deviance from typicality but is nonethele...

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Bibliographic Details
Published in:Neuroscience letters 2002-03, Vol.321 (3), p.133-136
Main Authors: Ikeda, Kazunari, Hayashi, Akiko, Hashimoto, Souichi, Otomo, Kiyoshi, Kanno, Atsushi
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adult
Behavioral psychophysiology
Biological and medical sciences
Category
Cerebral Cortex - physiology
Electroencephalography
Electrophysiology
Event-related potential
Female
Fundamental and applied biological sciences. Psychology
Humans
Language Tests
Male
Memory - physiology
Middle Aged
Mismatch negativity
Phoneme
Phonetics
Prototype
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Reaction Time - physiology
Sensory memory
Speech Perception - physiology
Verbal Behavior - physiology
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Summary:A two-tone oddball procedure was employed to examine the effect of a phonemic category on the mismatch negativity (MMN). One of the stimuli was a phoneme prototype of Japanese /e/, and the other, [e/ö], which was perceived by Japanese participants as showing deviance from typicality but is nonetheless included in the category /e/. As control stimuli, a pair of pure tones (1940 and 1794 Hz), corresponding to the F2 frequencies of /e/ and [e/ö] , respectively, was presented within the same oddball procedure. The MMN for deviant [e/ö] revealed greater amplitude than that of deviant /e/, although there was no significant difference in amplitude between the pure tones. The results suggest that a phonemic category determines the auditory sensory memory.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(01)02408-9