Abstract #3738

Towards a more precise and comprehensive characterization of the relationship between EEG alpha rhythm and thalamic BOLD signal

SeyedMohammad Shams^1,2, Pierre LeVan³, and J. Jean Chen^1,2

¹Rotman Research Institute at Baycrest, North York, ON, Canada, ²Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada, ³Department of Radiology, University Medical Center Freiburg, Freiburg, Germany

In this study, the relationship between EEG alpha band power and the BOLD signal is examined in the thalamus. We overcome previous limitations in temporal resolution by using fast fMRI (MREG) acquisitions. We also consider a wider range of lags between EEG and BOLD signals than previous studies. In addition, cross correlations between alpha EEG and fMRI signals from all voxels in the thalamus region of all subjects are automatically classified using clustering to reveal consistent spatial-temporal patterns in the relationships between EEG alpha activity and BOLD signals in different parts of thalamus.

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