Table 2.

Medial Temporal Lobe Volume Reductions and Behavioral Performance (Percent Correct) on Tests of Item and Relational Memory

Patient	HC	Relational Memory				Patient	PHG		Item Memory
		Lag 1	Lag 5	Lag 9	mean		gray	white	Lag 1	Lag 5	Lag 9	mean
HC Group						HC Group
1606	−3.99	93	55	60	69	1606	−2.46	−2.36	92	89	78	86
1846	−4.23	84	50	37	57	1846	−1.28	−2.19	93	79	83	85
2144	−3.92	96	64	80	80	2144	−1.22	0.65	100	90	86	92
2363	−2.64	100	63	56	73	2363	−2.26	−0.37	92	96	80	89
2563	N/A	100	92	96	96	2563	N/A	N/A	97	96	89	94
HC+ Group						HC+ Group
1951	−6.95	93	64	44	67	1951	--	--	96	83	80	86
2308	--	72	50	42	55	2308	−4.56	−5.16	83	59	74	72
6001	N/A	96	34	67	66	6001	N/A	N/A	96	83	62	80

HC, hippocampus; PHG, parahippocampal gyrus; --, not enough intact tissue to acquire an accurate measurement; N/A, no available data

Measures of brain volume are studentized residuals calculated relative to brain volumes obtained from a healthy comparison group (see Allen et al., 2006 for details). The cutoff for statistically reliable volume reduction was a studentized residual of −2.00 (p<.05).