Table 1.

Significance of differences of means and correlation coefficients for the scatter plots in Figure 10.

	Main + Echo	Main + Background	Main	Noise	Echo	Background
All neurons	Δresp = 0.11, F (1,601) = 30, p≪0.01	Δresp = 0.05, F (1,538) = 4.9, n.s.	Δresp = 0.15, F (1,643) = 60, p≪0.01	Δresp = 0.07, F (1,643) = 13, p<0.01	Δresp = 0.19, F (1,538) = 63, p≪0.01	Δresp = 0.19, F (1,601) = 79, p≪0.01
	ΔR2 = 0.10, F (1,279) = 42, p≪0.01	ΔR2 = 0.11, F (1,216) = 38, p≪0.01	ΔR2 = 0.05, F (1,321) = 28, p≪0.01	ΔR2 = 0.12, F (1,321) = 74, p≪0.01	ΔR2 = 0.04, F (1,216) = 16, p≪0.01	ΔR2 = 0.04, F (1,279) = 24, p≪0.01
2<BF<7 kHz	Δresp = 0.07, F (1,368) = 9, n.s.	Δresp = 0.06, F (1,348) = 5.4, n.s.	Δresp = 0.12, F (1,348) = 24, p≪0.01	Δresp = 0.1, F (1,348) = 18, p≪0.01	Δresp = 0.20, F (1,348) = 56, p≪0.01	Δresp = 0.28, F (1,368) = 133, p≪0.01
	ΔR2 = 0.19, F (1,181) = 59, p≪0.01	ΔR2 = 0.15, F (1,160) = 43, p≪0.01	ΔR2 = 0.07, F (1,187) = 20, p≪0.01	ΔR2 = 0.09, F (1,187) = 33, p≪0.01	ΔR2 = 0.07, F (1,160) = 22, p≪0.01	ΔR2 = 0.03, F (1,181) = 13, p≪0.01
BF<2 or BF>7 kHz	Δresp = 0.18, F (1,231) = 26, p<0.01	Δresp = 0.02, F (1,189) = 0.3, n.s.	Δresp = 0.19, F (1,267) = 40, p≪0.01	Δresp = 0.02, F (1,267) = 0.5, n.s.	Δresp = 0.15, F (1,189) = 10, p<0.01	Δresp = 0.01, F (1,231) = 0.2, n.s.
	ΔR2 = 0.01, F (1,97) = 1.4, n.s.	ΔR2 = 0.02, F (1,55) = 1.2, n.s.	ΔR2 = 0.02, F (1,133) = 5.5, p<0.01.	ΔR2 = 0.12, F (1,133) = 33, p≪0.01	ΔR2 = 0.0004, F (1,55) = 0.04, n.s	ΔR2 = 0.05, F (1,97) = 8.0, p≪0.01

Δ resp, difference in means between Natural and each of the other versions; significance was adjusted to effects of neuron and stimulus.