Table 1. Median Z-scores with quartile range in brackets for different ROI types and stimulus types (BOS, rBOS, and WN) and for baseline periods (BL).

	N ROIs/N Birds	Z-score BL	Z-score BOS	Z-score rBOS	Z-score WN
HVCX	226/3	0.00 [−0.19, 0.27]	0.63 [−0.02, 1.10]	−0.25 [−0.47, 0.06]	−0.25 [−0.51, −0.01]
			p = 1.2*10−13	p = 3.3*10−8	p = 9.2*10−14
Glia	198/2	0.03 [−0.20, 0.32]	0.22 [−0.07, 0.62]	0.11 [−0.14, 0.42]	0.17 [−0.16, 0.51]
			p = 1.1*10−5		p = 0.003
Neuropil	155/5	0.04 [−0.20, 0.25]	0.56 [−0.07, 1.11]	−0.16 [−0.49, 0.46]	−0.23 [−0.56, 0.25]
			p = 8.4*10−8		p = 5.5*10−4
Undet. cells	659/5	0.01 [−0.26, 0.24]	0.17 [−0.20, 0.61]	−0.01 [−0.34, 0.28]	−0.10 [−0.34, 0.25]
			p = 3.2*10−13

The reported P-values represent the probability that the median Z-score is equal to that of the BL distribution (paired Wilcoxon signed-rank test).