Fig. 1.

Dual intracellular recordings from HS and CH cells. a, Responses to visual motion in front of both eyes along the PD and ND of the cells. b, Simultaneously occurring large-amplitude EPSPs in HS and CH cells.c, Rebound action potentials elicited in an HSE cell are not transmitted to the dCH cell. d, Response of a dCH cell to current injection into the ipsilateral HSE cell and vice versa.e, Current–voltage relationship between an HSN and a dCH cell. Current was injected into the HSN cell, and voltage response was measured in the dCH cell.