Table 3.

Correlation between electrode placements (two-tailed) in vertical and horizontal planes.

Pearson correlation coefficient (vertical plane)
V1		.962*	.692*	.348*	.184	.181
V2	.962*		.677*	.283*	.203	.182
V3	.692*	.677*		.636*	.375*	.295*
V4	.348*	.283*	.636*		.607*	.547*
V5	.184	.203	.375*	.607*		.900*
V6	.181	.187	.295*	.547*	.900*
Spearman correlation coefficient (horizontal plane)
	V1	V2	V3	V4	V5	V6
V1		-.117*	.042	.070	.093	.159
V2	-.117*		.372*	.324*	.421*	.413*
V3	-.042	.372*		.548*	.377*	.125
V4	.070	.324*	.548*		.713*	.358*
V5	.093	.421*	.377*	.713*		.804*
V6	.159	.413*	.125	.358*	.804*

* = statistically significant at p ≤ 0.05.