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.