Table 1. Comparison between simple regression and piecewise (two components) regression.

	Simple correlation				Two linear components
	Ventral r	Ventral l	Dorsal r	Dorsal l	Ventral r	Ventral l	Dorsal r	Dorsal l
Box scrambling experiment	0.04 ± 0.01	0.03 ± 0.01	0.05 ± 0.02	0.1±0.02	0.23 ± 0.03	0.26 ± 0.04	0.27 ± 0.03	0.22 ± 0.02
Diffeomorphic scrambling experiment	0.13 ± 0.02	0.11 ± 0.01	0.03 ± 0.01	0.03 ± 0.01	0.26 ± 0.03	0.33 ± 0.02	0.18 ± 0.03	0.17 ± 0.02

The mean R² (and standard error) based on a simple correlation or the two linear components regression that was utilized for the voxel-wise analysis.