Table 3

Regions of interaction in retrieval activations between patients with TBI and controls*

					Coordinates
Side	Region	Brodmann's Area	Size (voxels)	Z	x	y	z
*Group differences in retrieval activations were determined by interactions in a two way analysis of covariance with two groups (controls versus TBI patients) and two conditions (encoding versus retrieval).
Increased retrieval activation relative to controls
R	Middle frontal gyrus	10	160	4.53	30	52	20
R	Cingulate gyrus	32	66	3.94	12	10	44
L	Superior, middle frontal gyri	10	124	3.25	−26	46	20
R	Middle occipital gryus	19	77	3.21	46	−70	8
L	Middle occipital gyrus	19	127	3.62	−46	−76	12

Decreased retrieval activation relative to controls
R	Inferior frontal gyrus	45	68	3.12	48	30	8
R	Superior frontal gyrus	9	48	3.98	12	56	28
L	Superior temporal gyrus	22	43	3.39	−58	2	0
R	Thalamus		31	3.41	4	−10	0
R	Cerebellum		63	3.85	14	−46	−12