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Abstract #4517

Delayed fMRI timing in the human auditory cortex in lexical processing is correlated with increased EEG power in beta band

Hsin-Ju Lee1, Hui-Chuan Chang1, Ying-Hua Chu2, Wen-Jui Kuo1, and Fa-Hsuan Lin2

1Institute of Neuroscience, National Yang Ming University, Taipei, Taiwan, 2Institute of BIomedical Engineering, National Taiwan University, Taipei, Taiwan

Using fast fMRI (whole-brain 10 Hz sampling), we revealed the left hemisphere’s BOLD signal is more delayed by 500 ms when engaging a lexical discrimination task than a non-lexical discrimination task. EEG study on the same subjects suggested such BOLD signal delay is related to the oscillatory power in the beta band.

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