Abstract #1736
Correlation between fMRI signals and oscillatory neuronal responses during audiovisual information processing
Hsin-Ju Lee1,2, Lauri Nummenmaa3,4,5, Hsiang-Yu Yu6,7, Cheng-Chia Lee7,8, Chien-Chen Chou6, Chien Chen6,7, Wen-Jui Kuo7,9, and Fa-Hsuan Lin1,2
1Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada, 2Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada, 3Turku PET Centre, University of Turku, Turku, Finland, 4Department of Psychology, University of Turku, Turku, Finland, 5Turku University Hospital, Turku, Finland, 6Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, 7Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan, 8Department of Neurosurgery, Taipei Veterans General Hospital, Taipei, Taiwan, 9Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, Taiwan
Synopsis
We studied how fMRI signal is related to neural oscillations by taking both fMRI and invasive recordings from epilepsy patients. Specifically, we examined the neurovascular coupling during complex naturalistic stimuli processing. A significant negative correlation between gamma-band neural oscillations at hippocampus/amygdala and fMRI signals was found at the amygdala, hippocampus, and inferior occipital lobes while viewing short movie clips. These correlations sustain across gamma, beta, and alpha bands. The left angular gyrus shows a positive correlation between neural oscillations and fMRI dynamics at the theta band.
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