Table 4.

Clusters for brain activations by the group during semantic fluency and finger tapping while controlling for age and MMSE.

Contrast	Voxels	P	Z-MAX	Z-MAX	Z-MAX	Z-MAX	Structures
			X (mm)	Y (mm)	Z (mm)
Semantic Fluency
Young group activations	571	0.0061	4.74	42	−62	−24	R cerebellar crus I and VI, visual cx V4
	544	0.00814	4.48	10	−94	4	R visual cx BA 17 and BA 18, optic radiation, lateral occipital cx.
	418	0.0332	4.87	−10	−16	16	LR thalamus, anterior thalamic radiation, caudate; R fornix.
Older group activation	618	0.00373	4.29	−44	−68	50	L inferior parietal lobule and intra-parietal sulcus.
O > Y	838	0.0004	4.72	−44	−68	50	L anterior intra-parietal sulcus, inferior parietal lobule, lateral occipital cx.
Finger Tapping
Young group activations	1,498	0.00000131	8.25	−14	−50	−12	L cerebellar V and VI, lingual gyrus, visual cx V4; LR cerebellar I–IV.
	711	0.00127	4.81	12	−90	10	R visual cx BA sulcus; and bilaterally, in premotor cortex17 and BA 18, optic radiation.
Older group activation	401	0.037	4.6	−56	−20	46	L primary somatosensory cortex, premotor cx, primary motor cx, inferior parietal lobule, anterior intra-parietal sulcus.
Y > O	1,115	3.01 e-5	4.52	−14	−50	−12	L cerebellar V, lingual gyrus, cingulate gyrus, hippocampus, callosal body, and fornix.

Y, young group; O, older group. All the comparisons were performed controlling for MMSE score and age.