Figure 5.

Intralaminar connections between L5 COM cells. A, Dual recording from neighboring L5 COM cells. Spikes in the presynaptic cell (bottom trace) were elicited by current pulse injections while the postsynaptic cell was clamped at −60 mV (top trace). B, Percentage of synaptically connected cell pairs. Whole, All cell pairs examined; hetero, cell pairs of different firing subtypes; homo, same subtype combination. *p < 0.05. n1, Number of connected pairs; n2, number of examined pairs. C, Relationship between the paired-pulse ratio and the mean EPSC amplitude. Filled circles, Pairs of different subtype combinations.