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Reference (APA Format)

Herdman A.T., Fujioka T., Chau W., Ross B., Pantev C. & Picton T.W. 2006. Cortical oscillations related to processing congruent and incongruent grapheme-phoneme pairs. Neuroscience Letters, 399 (1-2), 61-66.

Title

Cortical oscillations related to processing congruent and incongruent grapheme-phoneme pairs

Journal Name

Neuroscience Letters

Abstract

In this study, we investigated changes in cortical oscillations following congruent and incongruent grapheme-phoneme stimuli. Hiragana graphemes and phonemes were simultaneously presented as congruent or incongruent audiovisual stimuli to native Japanese-speaking participants. The discriminative reaction time was 57ms shorter for congruent than incongruent stimuli. Analysis of MEG responses using synthetic aperture magnetometry (SAM) revealed that congruent stimuli evoked larger 2-10 Hz activity in the left auditory cortex within the first 250 ms after stimulus onset, and smaller 2-16 Hz activity in bilateral visual cortices between 250 and 500 ms. These results indicate that congruent visual input can modify cortical activity in the left auditory cortex.

Volume

399 (1-2)

Year

2006

Pages

61-66

Authors

Herdman A.T., Fujioka T., Chau W., Ross B., Pantev C. & Picton T.W.

More Information

Author Keywords: cortical oscillations; magnetoencephalography; beamformer; audiovisual; grapheme; phoneme KeyWords Plus: HUMAN BRAIN; MULTISENSORY CONVERGENCE; DESYNCHRONIZATION; INTEGRATION; SYNCHRONIZATION; CORTEX; SPEECH; TASK Publisher: ELSEVIER IRELAND LTD, ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND Subject Category: Neurosciences IDS Number: 042KL ISSN: 0304-3940 DOI: 10.1016/j.neulet.2006.01.069