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. 2014 Mar 26;9(3):e93154. doi: 10.1371/journal.pone.0093154

Figure 4. The waveform and topography of an example epileptic spike.

Figure 4

FT9 spike: 71 channel EEG (left column) and 129 channel MEG (right column) butterfly plots (upper row, time-point −13 ms marked with a black line) and corresponding topographies from left view at time-point −13 ms plotted on individual brain and skin (bottom row).