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. 2008 Jun 27;4(6):e1000100. doi: 10.1371/journal.pcbi.1000100

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Supekar et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Global efficiency measure (E_global), for the AD group (Δ) and the control group (○) at three frequency intervals–0.01 to 005 Hz (green), 0.06 to 0.12 Hz (blue), and 0.13 to 0.25 Hz (red). The mean E_global value is low (0.78<λ<1) and shows similar trends at all the scales. (B) For the frequency interval 0.01 to 005 Hz (green)–mean E_global values for the AD group and the control group for networks derived by thresholding the correlation matrices such that the network has K′ edges. No significant differences in the mean E_global values were observed. Error bars represent values two standard deviations from the mean.