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. Author manuscript; available in PMC: 2011 Sep 15.
Published in final edited form as: Prog Brain Res. 2011;193:145–162. doi: 10.1016/B978-0-444-53839-0.00010-7

Figure 1. Infra-slow fluctuations in human brain activity as assessed with fMRI.

Figure 1

A. Top: spontaneous fluctuations in human BOLD activity obtained during resting fixation (right) and taken from the seed region shown in the image to the left. Bottom: map showing voxels that were significantly correlated with the extracted signal shown above (LSMC and RSMC: left and right somatosensory cortex; S2: secondary somatosensory association cortex; Th: posterior nuclei of the thalamus; P: putamen; Cer: cerebellum) (reproduced with permission from Fox and Raichle, 2007). B. Simultaneous acquisition of the thalamic BOLD signal (top) and EEG α rhythm (convolved with a hemodynamic response function and plotted below) demonstrates a positive correlation between the two signals (reproduced with permission from Goldman et al., 2002). C. Association between EEG rhythms and resting state networks (RSNs). Several RSNs show correlations with α activity. The source of activity shown in B is likely to be RSN 3, a posterior network involving areas dedicated to visual processing, where there is both a clear involvement of the thalamus and a positive correlation between thalamic BOLD activity and the α rhythm (reproduced with permission from Mantini et al., 2007).