Table 1.

Individual coordinates of the M1

Subject	Right M1				Left M1
	x	y	z	Δy	x	y	z	Δy
S1	34	−18	60	+4	−42	−20	56	+4
S2	30	−20	60	+3	−34	−22	60	+1
S3	40	−22	60	0	−44	−20	64	0
S4	34	−22	48	+2	−34	−18	52	+4
S5	38	−20	62	+1	−34	−20	60	+3
S6	34	−24	56	−1	−38	−30	54	0
S7	42	−26	62	+1	−40	−28	60	0
S8	46	−22	54	+1	−42	−24	50	+2
S9	38	−18	66	+1	−38	−24	60	0
S10	38	−22	70	+4	−38	−28	68	+5
S11	38	−24	50	−1	−36	−30	50	+1
S12	40	−20	58	+4	−42	−26	54	−1
S13	40	−28	68	+2	−46	−20	64	+2
S14	44	−26	58	−1	−36	−30	52	+2
S15	42	−24	68	−3	−34	−22	70	0
S16	42	−14	50	+6	−42	−2	58	+6
S17	36	−24	48	+1	−34	−24	50	0
S18	42	−20	68	+2	−54	−20	56	−3
S19	36	−24	54	−2	−40	−18	66	+1
S20	38	−18	52	+2	−38	−20	52	+5
S21	38	−24	46	+1	−34	−24	56	0
S22	36	−26	50	0	−32	−22	54	0
Mean ± SD	38 ± 3.8	−22 ± 3.4	58 ± 7.4	+1 ± 2.2	−39 ± 5.1	−22 ± 6.0	58 ± 6.0	+1 ± 2.3

Note: All of the coordinates are represented in standard stereotaxic space. Δy represents the distance from the CS (+ indicates anterior to the CS; − indicates posterior to the CS).