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ERIC Number: EJ746750
Record Type: Journal
Publication Date: 2007-Jan
Pages: 10
Abstractor: Author
Reference Count: N/A
ISSN: ISSN-0093-934X
Mismatch Negativity Elicited by Tones and Speech Sounds: Changed Topographical Distribution in Aphasia
Becker, Frank; Reinvang, Ivar
Brain and Language, v100 n1 p69-78 Jan 2007
This study used the event-related brain potential mismatch negativity (MMN) to investigate preconscious discrimination of harmonically rich tones (differing in duration) and consonant-vowel syllables (differing in the initial consonant) in aphasia. Eighteen Norwegian aphasic patients, examined on average 3 months after brain injury, were compared to 11 healthy controls. The main finding was a difference in topographic distribution of the MMN: the aphasia group showed a less lateralized and centralized topographic pattern especially to CV syllables, which is consistent with a reduced temporal lobe processing contribution and an increased right hemisphere activation. No correlations between MMN amplitude and aphasia test results were found.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Norway