Table 1.

Location of movement-related activities in the precentral gyrus (PcG)

	Coordinates (mean±S.D.)
Activity	x	y	z	Anatomical location	N of subjects
R hand movement task
L PcG (contra-hand)	−37±5	−19±4	54±3	CS = 8	A&V = 8
R PcG (ipsi-hand)*	54±7	5±10	42±5	PcS = 4; Conv. = 1; CS = 1	A&V = 4; A = 2
L hand movement task
L PcG (ipsi-hand)	−49±7	2±6	46±6	Conv. = 5; PcS = 3	A&V = 4; A = 4
R PcG (contra-hand)	38±5	−17±4	54±5	CS = 8	A&V = 8
R face movement task
L PcG (contra-face)	−53±3	−6±4	38±4	Conv. = 4; CS = 4	A&V = 8
R PcG (ipsi-face)	56±2	−1±4	37±4	Conv. = 4; CS = 4	A&V = 8
L face movement task
L PcG (ipsi-face)	−54±3	−6±3	38±7	Conv. = 5; CS = 3	A&V = 7; A = 1
R PcG (contra-face)	55±4	−2±3	36±5	Conv. = 4; CS = 4	A&V = 7; A = 1

The coordinates were obtained from the most significantly activated voxel from the conjunction analysis or the separate analysis only on the auditory-cued movement for each individual. All PcG zones, except for the hand ipsi-PcG in the right hemisphere, yielded data from all subjects. Listed are Talairach and Tournoux’s coordinates converted from the Montreal Neurological Institute coordinates. R, right; L, left; Conv., convexity part of PcG; PcS, caudal bank of precentral sulcus; CS, rostral bank of PcG; A&V, conjunction analysis for auditory-cued and visual-cued movements; A, analysis on the auditory-cued movement only.