Table 7.

Differences of effective connectivity in the SMA between patients with Parkinson’s disease and normal subjects during performing anti-phase movements

Brain region	Coordinates			t-value	Cluster size
	x	y	z
Normal–Parkinson’s disease
Left dorsolateral prefrontal cortex	−30	26	34	9.56	323
Left Putamen	−26	−8	0	8.69	118
Parkinson’s disease–Normal
Left SM1	−32	−30	55	9.04	83
Right superior parietal lobule	30	−55	56	8.93	130
Left cerebellum, posterior lobe, pyramis	−20	−62	−29	8.57	104
Left superior parietal lobule	−30	−57	54	8.29	28
Right cerebellum, posterior lobe, pyramis	30	−69	−31	8.19	36
Left cerebellum, posterior lobe, pyramis	−8	−73	−28	8.02	26
Right precuneus	18	−62	−27	7.96	74
Right SM1	22	−25	66	7.88	26

List of the brain regions showing a significant connectivity with the SMA (P < 0.05, corrected). The coordinates are given as stereotaxic coordinates referring to the atlas of Talairach and Tournoux (1988).