Table 2:

Comparison of MB, MTT, and PF volumes between SCA3 patients and HCs.

		Mean ± SD (mm3)		t	P
		SCA3	HCs
MB	Right	75.47 ± 9.54	90.92 ± 10.31	−2.261	<0.01**
	Left	83.94 ± 10.49	96.38 ± 10.81	−2.409	<0.01**
MTT	Right	57.10 ± 8.10	72.64 ± 10.52	−1.823	<0.01**
	Left	59.93 ± 8.46	69.92 ± 7.03	−2.621	<0.01**
PF	Right	52.78 ± 6.96	59.78 ± 7.46	−1.028	<0.01**
	Left	57.81 ± 7.57	63.82 ± 6.62	−2.210	<0.01**

MB: mammillary body; MTT: mammillothalamic tract; PF: post-commissural fornix. **P < 0.01.