Figure 3 : Travelling wave directions during seizure epochs are dependent on the location of the ictal wavefront.

From: The ictal wavefront is the spatiotemporal source of discharges during spontaneous human seizures

Figure 3

(a) Example velocity vectors for one seizure before and after recruitment. The black line indicates the direction of ictal wavefront passage across the MEA. The shift in direction between pre-recruitment and post-recruitment discharges that occurs precisely at the time of ictal wavefront passage is apparent. In each case, the ictal wavefront’s location relative to the MEA site is opposite to the predominant travelling wave direction. (bd) Distributions of travelling wave directions across all seizures, relative to the direction of the ictal wavefront (black line), coloured by epoch (b: pre-recruitment, c: post-recruitment, d: pre-termination).