Table 1.

Quantitative morphometric data on thickness, surface area, and volume of medial temporal cortical regions in Normal Younger, Normal Older, and mild AD participant groups

	Thickness			Surface area			Volume
	Younger	Older	Mild AD	Younger	Older	Mild AD	Younger	Older	Mild AD
ERC
LH	2.88 (0.26)	2.75 (0.32)	2.35 (0.39)**	187 (48)	173 (56)*	152 (44)	892 (190)	773 (254)*	553 (194)**
RH	2.66 (0.39)	2.54 (0.32)	2.11 (0.36)**	199 (46)	167 (52)*	154 (54)	847 (195)	676 (223)*	495 (218)**
PRC
LH	2.12 (0.46)	2.15 (0.45)	1.87 (0.41)**	248 (81)	219 (72)	249 (90)	601 (197)	532 (185)	521 (212)
RH	2.09 (0.42)	2.08 (0.35)	1.85 (0.36)**	219 (70)	220 (66)	210 (85)	519 (135)	525 (163)	459 (170)
PPHC
LH	1.96 (0.21)	1.94 (0.26)	1.83 (0.29)**	539 (68)	478 (81)*	481 (81)	1263 (226)	1075 (242)*	989 (231)
RH	1.86 (0.20)	1.92 (0.21)	1.77 (0.26)**	502 (59)	445 (84)*	461 (100)	1078 (173)	970 (200)*	916 (271)

Values represent mean (standard deviation). ERC: entorhinal cortex; PRC: perirhinal cortex; PPHC: posterior parahippocampal cortex; AD: Alzheimer's disease; LH: left hemisphere; RH: right hemisphere.

^*Normal Older group is different from Normal Younger group, p < 0.05.

^**Mild AD group is different from Normal Older group, p < 0.05.