Elsevier

NeuroImage

Volume 12, Issue 1, July 2000, Pages 14-19
NeuroImage

Regular Article
Separate Time Behaviors of the Temporal and Frontal Mismatch Negativity Sources

https://doi.org/10.1006/nimg.2000.0591Get rights and content

Abstract

It has been proposed that mismatch negativity (MMN) is generated by temporal and frontal lobe sources, the former being associated with change detection and the latter with involuntary switching of attention to sound change. If this switching of attention is triggered by the temporal cortex change-detection mechanism, one would expect that the frontal component of MMN is activated later than the temporal one. This was studied by using 64-channel electroencephalography (EEG) and 122-channel magnetoencephalography (MEG) with realistically shaped head models to determine the source current distribution in different lobes as a function of time. Minimum-norm estimation (MNE) was performed, constraining the solution to the reconstructed cortical sheet. The results support the hypothesis that the frontal MMN generator is activated later than the auditory cortex generator.

Cited by (423)

View all citing articles on Scopus
View full text