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. 2013 May 15;4:55. doi: 10.3389/fneur.2013.00055

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Copyright © 2013 Song, Tucker, Gilbert, Hou, Mattson, Luu and Holmes.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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EEG was continuously recorded. Spikes were detected. The continuous EEG was segmented. The head volume (MR/CT) was segmented and registered to the electrodes. The lead field matrix was calculated. The cortical source waveforms were estimated. The source waveforms were averaged over Brodmann Areas. The BA waveforms were transformed to the frequency domain by fast Fourier transformation. The coherences of the BA waveforms were computed. If the high performance computing (HPC) power is available, the step of averaging over BAs is not required.