Table II.

Activated areas during left rhythmic handgrip in healthy subjects

Anatomic location of activated area	Spatial extent*	Z‐score	rCBF increase (%)**	Talairach coordinates
				x	y	z
R Pre/postcentral gyrus, S1/M1	2,068	>8	34	42	−28	64
Bottom central sulcus, S1/M1	—	>8	—	38	−26	50
Pre/post‐central gyrus, S1/M1	—	7.02	—	54	−18	48
L Cerebellum	281	7.07	28	−20	−52	−20
L Cerebellum	—	5.79	—	−8	−54	−14
R Inferior parietal lobule, area 40	210	6.08	—	56	−32	26
Postcentral gyrus, area 40	—	6.08	—	54	−22	20
R Insula (central)	54	5.56	20	36	−8	0
R Insula (central)	—	5.02	—	26	−6	6
L Precentral gyrus, area 6	5	5.37	—	−64	−4	28
Medial aspect, frontal lobe, SMA	13	5.23	19	2	−5	54
R Precentral gyrus	47	5.21	—	42	−2	10
R Precentral gyrus	—	4.99	—	48	−8	8
L Insula (dorsal)	8	5.13	20	−48	−8	10

Table is sorted in order of descending peak Z‐score in each confluent area. Voxel numbers are not shown for subpeaks (indented). Areas with less than five pixels are not listed. P < 0.05, corrected.

^*Spatial extent is measured in voxels of 2 × 2 × 2 mm³.

^**The increase in rCBF (activation minus rest) was calculated as described in the legend to Figure 2.

rCBF, regional cerebral blood flow; S1/M1, primary sensorimotor area; SMA, supplementary motor area.