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. 2015 Aug 6;36(9):1901–1912. doi: 10.1088/0967-3334/36/9/1901

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© 2015 Institute of Physics and Engineering in Medicine

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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Figure 4. — Change in frequency across channels. Panel (A) shows the mean theta frequency difference (colour scale) between stimulation and sham conditions in each channel across all subjects. The channels to the front of the head are towards the top of the page. The histogram in panel (B) shows the null distribution of this frequency difference (essentially randomly relabeling sham and stim conditions). The red dotted line shows the 95 percentile of this null distribution and the solid green line shows the largest change in frequency actually observed (p < 0.17).