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. 2015 Mar 11;10(3):e0118753. doi: 10.1371/journal.pone.0118753

Fig 1. Butterfly plots and topographies of grand-average EEG and MEG spikes.

Fig 1

Butterfly plots (left) and topographies (right) of EEG (upper row) and MEG (lower row) for the grand-average (average over all 200 single epileptic spikes). The time points that are discussed in the manuscript, namely -33 ms (dark blue), -23 ms (light blue), -13 ms (yellow) and -3 ms (orange), are indicated by solid vertical lines with different colors. Topographies are shown for the EEG spike peak (time point 0 ms) as indicated by the dashed vertical line in the butterfly plots.