Table 4.

Duration of facilitated firing rate modulations

Region Manipulated	Region Recorded	Condition	Duration, ms	MWU	P Value
M1	Layers II/III	Control	180.3 ± 12.3
		Saline	168.5 ± 14.2	6707	0.9955	n.s.
		Muscimol	151.3 ± 14.6
	Layer IV	Control	179.4 ± 11.7
		Saline	141.7 ± 22.5	2450	0.1166	n.s.
		Muscimol	156.7 ± 33.1
	Layers V/VI	Control	202.9 ± 18.8
		Saline	201.6 ± 20.2	4895	0.0031	*
		Muscimol	152.0 ± 18.7
S1	Layers II/III	Saline	109.8 ± 12.9	839.5	0.4872	n.s.
		Muscimol	82.0 ± 6.90
	Layer IV	Saline	153.2 ± 15.0	2362	0.3133	n.s.
		Muscimol	113.4 ± 12.6
	Layers V/VI	Saline	208.1 ± 15.4	16100	0.5866	n.s.
		Muscimol	204.2 ± 17.1

Values are means ± SE. Inactivation of M1 selectively decreased the duration of firing rate modulations infragranular layers of S1. No clear effect was detected after S1 inactivation.

^*P < 0.01.