Table 6.

Significant clusters and peak coordinates from exploratory analysis in task-negative regions

Cluster size	Max P value	x	y	z	Location
Less deactivation in PIB+ versus PIB−
163	0.0002	−56	−50	26	L supramarginal gyrus
91	0.001	6	−92	28	R medial occipital
73	0.003	0	−40	30	Posterior cingulate
53	0.002	−30	24	30	L middle frontal gyrus
50	0.001	60	−60	36	R lateral occipital
Less deactivation in PIB− versus PIB+
158	0.001	2	−92	8	Medial occipital
55	0.001	56	−44	26	R angular gyrus

Note: Exploratory analysis within task-negative regions failed to reveal strong evidence for an effect of amyloid within old subjects. L, left; R, right.