Table 2. Asymmetry statistics.

		Asymmetry index (SD)			Pairwise t test P value
Sector	Status	GM	WM	Total	GM	WM	Total	GW ratio
Temporal lobe	D	-0.001 (0.064)	-0.002 (0.099)	-0.001 (0.074)	ns	ns	ns	ns
	H	0.001 (0.077)	-0.003 (0.121)	-0.000 (0.092)	ns	ns	ns	ns
HG	D	0.159 (0.213)	0.018 (0.258)	0.125 (0.212)	0.000 (l > r)	ns	0.003 (l > r)	0.001 (l > r)
	H	0.158 (0.265)	-0.007 (0.290)	0.111 (0.259)	0.008 (l > r)	ns	0.045 (l > r)	0.000 (l > r)
STG	D	0.050 (0.137)*	-0.208 (0.171)	-0.022 (0.142)*	ns	0.000 (r > l)	ns	0.000 (l > r)
	H	0.149 (0.173)	-0.120 (0.182)	0.069 (0.173)	0.000 (l > r)	0.003 (r > l)	0.049 (l > r)	ns
PT	D	0.186 (0.189)			0.000 (l > r)
	H	0.252 (0.342)	na	na	0.001 (l > r)	na	na	na

Asymmetry index = (L - R)/[(L + R)/2]. D, deaf; H, hearing; ns, not significant; na, not applicable; l, left; r, right.

^*Difference between deaf and hearing subjects (t test) P < 0.05.