Table 3. Volume of subcortical ROIs (ipsilateral and contralateral) is stroke.

This table shows the mean volume of several representative ROIs in the contralateral and ipsilateral side of the stroke, the effect size between the two distributions (i.e., the asymmetry), and the correlation between the stroke lesion size and the volumes of the ROIs, including P values computed with Student’s t test. We only included in this analysis stroke lesions that had more than two-thirds of their volume in one of the two hemispheres (N = 598).

Region	Hippocampus	Amygdala	Thalamus	Putamen	Caudate
Contralateral volume, mean and SD (mm3)	4861 ± 560	2113 ± 274	7131 ± 803	5442 ± 686	4551 ± 483
Ipsilateral volume, mean and SD (mm3)	4831 ± 560	1999 ± 310	5958 ± 1420	4642 ± 1147	4096 ± 655
Effect size: Contralateral versus ipsilateral	0.05	0.39	1.02	0.85	0.79
Correlation of lesion and contralateral volumes and P value	0.011 (P = 0.78)	−0.027 (P = 0.50)	0.021 (P = 0.61)	0.052 (P = 0.20)	0.07 (P = 0.07)
Correlation of lesion and ipsilateral volumes and P value	0.003 (P = 0.93)	−0.300 (P < 10−13)	−0.410 (P < 10−24)	−0.494 (P < 10−37)	−0.349 (P < 10−17)