Figure 1.
Ictal discharges can be triggered by optogenetic stimulation of PV- or SOM-positive interneurons. A, Ictal discharge evoked by 0.2 Hz series of 1 s light pulses stimulating PV-positive interneurons during bath application of 4AP; ictal onset is expanded to show the timing of the light pulse in relation to ictal onset (box). B, The same stimulation parameters applied to SOM-positive interneurons also triggers ictal discharges.