Fig. 9: Polysynaptic inhibition between striatal ChINs enhances synchrony and broadcasts the pause signal to neighboring ChINs.

Top: following common excitatory input in a subset of ChINs, polysynaptic inhibition can broadcast a synchronous pause in the bursting population (left ChIN) as well as neighboring ChINs that did not burst following the excitatory input (right ChINs). Bottom: presynaptic ChINs can promote synchrony in postsynaptic ChINs by increasing the likelihood of synchronous discharge through rebound spiking after a concurrent inhibition. The scheme illustrates the concurrent discharge following a polysynaptic inhibitory event.