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Abstract #0385

Electrophysiological Correlate of fMRI Resting-State Networks in Macaques

Xiao Liu 1 , Toru Yanagawa 2 , David A. Leopold 3 , Naotaka Fujii 2 , and Jeff H. Duyn 1

1 NINDS, National Institutes of Health, Bethesda, MD, United States, 2 RIKEN Brain Science Institute, Saitama, Japan, 3 NIMH, National Institutes of Health, MD, United States

To investigate the neural correlate of fMRI resting-state networks (RSNs), we recorded and analyzed large-scale ECoG data from macaques during eyes-closed wakefulness, sleep, and two anesthetic regimes. A data-driven analysis on co-variations of spontaneous power fluctuations revealed 8 spatial patterns that corresponded closely to previously reported RSNs. These patterns were similar across spectral frequency bands and behavioral conditions. We conclude that fMRI RSNs reflect the spatial organization of spontaneous broadband neural activity, which appears to be a core aspect of the brains physiology that is preserved across various states of consciousness.

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