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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