Table 2.

SCN neurons show two E _GABA depending on the region and time of recording, as shown by the relative distribution of the equilibrium potential around −50 mV. Blockade of Cl⁻ transporter NKCCl by bumetanide affected only the potential above −50 mV (W = 28, P = 0.01, Wilcoxon test).

Region	Time	Control		+Bumetanide
		n	Mean ± SEM	n	Mean ± SEM
Dorsal	Day	26	−35.5 ± 1.8	11	−58.5 ± 3.9
	Night	5	−30.2 ± 7.3	5	−53.4 ± 3.7
Ventral	Day	3	−36.7 ± 8.8	3	−56.7 ± 3.6
	Night	12	−37.5 ± 2.3	5	−65.1 ± 8.2