Table 3.

Frequency-specific ITD tuning in the optic tectum

Experience	Best ITD relative to predicted normal^3-a
	Broadband			4 kHz			6 kHz			8 kHz
	Median	IQR^3-b	n	Median	IQR^3-b	n	Median	IQR^3-b	n	Median	IQR^3-b	n
Normal	1	11	42	−1	16	21	−1	10	44	0	11	53
Device-reared	−44*	73	206	−55*	21	91	−42*	56	52	23*	26	87

↵F3-a See text for explanation of predicted normal. ITD was measured using a broadband (3–12 kHz) stimulus and narrowband (1 kHz bandwidth) stimuli centered between 3 and 5 kHz (“4 kHz”), between 5 and 7 kHz (“6 kHz”), and between 7 and 9 kHz (“8 kHz”).
↵F3-b IQR, Interquartile range.
*Significantly different from normal (Mann–Whitney U test, p < 0.01).