TABLE 2.

Brain and Ventricular Volumes of Patient Subgroups and Healthy Comparison Subjects

Subject Group	Cortex (mm³)									Cortex (mm³)
	Tissue Type	Dorsolateral Prefrontal		Premotor		Sensorimotor		Parietal		Orbitol-frontal		Subgenual		Midtemporal		Inferior Occipital
	Tissue Type	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE
Neuropsychologically near normal patients (N=21)	gray matter	26502^a	796	26794^a	901	32008^a	977	75222^a	1953	5802^a	342	14712^a	514	18395^a	474	32646^a	1055
Neuropsychologically near normal patients (N=21)	white matter	21662	771	39823	1187	55600	1377	85389	2464	3139	280	8171	400	21996	636	28413	1046
Neuropsychologically impaired patients (N=54)	gray matter	25929^a	510	26677^a	580	31175^a	628	74261^a	1253	6273	217	15048^a	327	18690^a	305	32516^a	672
Neuropsychologically impaired patients (N=54)	white matter	20452^a	473	37962^a	727	52473^b	842	78345^b	1505	2950^a	174	8022^a	246	21650	389	26303	641
Healthy comparison subjects (N=30)	gray matter	30116	667	31928	756	36201	819	86310	1637	6778	286	17361	430	19927	398	35481	882
Healthy comparison subjects (N=30)	white matter	22992	650	41329	1001	55304	1161	86693	2078	3658	235	8949	336	22630	535	28225	883

Patient subgroup differs significantly from healthy comparison subjects.

Patient subgroup differs significantly from healthy comparison subjects and other patient groups.