Table 1.

Summary of results from intracellular recordings during light and no-light epochs

		Up-state latency (ms)		Early depolarization amplitude (mV)
		No light	Light	No light	Light
No treatment (n = 14)	Baseline	394 ± 23	319 ± 27	1.8 ± 0.3	3.8 ± 0.7
BIC into SC (n = 7)	Baseline	531 ± 59	475 ± 53	1.5 ± 0.6	4.0 ± 0.5
	5 min after SC BIC	358 ± 71	115 ± 14	4.2 ± 1.3	13.3 ± 1.8
AMPT/BIC into SC (n = 7)	Baseline	375 ± 23	359 ± 19	0.5 ± 0.2	1.9 ± 0.3^{^b}
	5 min after SC BIC	338 ± 39	125 ± 8	3.3 ± 0.8	13.7 ± 2.1
BIC into Cx (n = 4)	Baseline	491 ± 54	480 ± 55	1.9 ± 0.8	3.6 ± 0.7
	5 min after Cx BIC	490 ± 62	505 ± 80^{^a}	1.7 ± 0.6	2.6 ± 0.8^{^a}
MUS onto Cx (n = 4)	Baseline after MUS	699 ± 204	652 ± 250	0.7 ± 0.3	1.6 ± 0.3^{^b}
	5 min after SC BIC	411 ± 68	136 ± 17	1.7 ± 0.6	13.4 ± 3.0
MUS/BAC into thalamus (n = 5)	Baseline after MUS/BAC	725 ± 93	768 ± 129	0.7 ± 0.2	0.7 ± 0.3^{^b}
	5 min after SC BIC	463 ± 77	215 ± 39^{^a}	1.1 ± 0.3	3.2 ± 0.7^{^a}

BIC ejection into the SC induced visual responses characterized by short up-state latencies and large early depolarization amplitudes measured from the down state (highlighted).
↵^aA significantly weaker visual response after BIC compared with the BIC into SC group (Wilcoxon's rank sum test, p < 0.05). Note that (1) BIC ejection into the cortex (Cx) failed to induce increased visual responsiveness and that (2) only MUS/BAC ejection into the thalamus significantly diminished visual response strength after BIC into the SC.
↵^bSignificantly decreased membrane potential fluctuations at baseline induced by AMPT or MUS pretreatment (p < 0.05, Wilcoxon's rank sum test).