Table 2.

Statistical assessment of input (sound intensity)–output (wave I amplitude)

10–16 kHz	10 kHz		12 kHz		16 kHz
Source of variation	P value	Sig	P value	Sig	P value	Sig
Intensity	< 0.0001	****	< 0.0001	****	< 0.0001	****
Exposure	0.001	***	0.02	*	0.002	**
Drug condition	0.25	ns	0.42	ns	0.11	ns
Intensity × exposure	0.99	ns	0.99	ns	0.96	ns
Intensity × drug condition	0.99	ns	0.99	ns	0.93	ns
Exposure × drug condition	0.08	ns	0.10	ns	0.07	ns
Intensity × exposure × drug condition	0.99	ns	0.99	ns	0.90	ns
20–32 kHz	20 kHz		24 kHz		32 kHz
Source of variation	P value	Sig	P value	Sig	P value	Sig
Intensity	< 0.0001	****	< 0.0001	****	< 0.0001	****
Exposure	0.67	ns	0.54	ns	0.94	ns
Drug condition	0.46	ns	0.88	ns	0.77	ns
Intensity × exposure	0.94	ns	0.96	ns	0.96	ns
Intensity × drug condition	0.99	ns	0.99	ns	0.99	ns
Exposure × drug condition	0.09	ns	0.29	ns	0.33	ns
Intensity × exposure × drug condition	0.95	ns	0.98	ns	0.96	ns