TY  - JOUR
PY  - 2007//
TI  - Mismatch negativity elicited by tones and speech sounds: changed topographical distribution in aphasia
JO  - Brain and language
A1  - Becker, Frank
A1  - Reinvang, Ivar
SP  - 69
EP  - 78
VL  - 100
IS  - 1
N2  - 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.<p /> <p>Language: en</p>
LA  - en
SN  - 0093-934X
UR  - http://dx.doi.org/10.1016/j.bandl.2006.09.004
ID  - ref1
ER  -