Abstract #3746

Characterizing cross session coherence in the resting-state human brain

Shuqin Zhou¹, Xiaopeng Song¹, Yue Cai¹, Xuemei Fu¹, and Jiahong Gao²

¹Department of Biomedical Engineering, Peking University, Beijing, China, People's Republic of, ²Center for MRI Research and Beijing City Key Lab for Medical Physics and Engineering, Peking University, Beijing, China, People's Republic of

Previous studies suggested that the BOLD signal might be a mixture of different frequency components, but the neurophysiological basis of these components is still unclear. In this study, we attempted to quantify the similarity of the frequency profiles of the resting-state BOLD signals in different sessions by computing the cross session coherence (CSC) of these components. Our results suggested that different frequency components of BOLD signal in the brain might be associated with distinct intrinsic neuronal oscillations rather than random noise.

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