Table 1.

Characteristics of participants

Case number	Group	Age (years)	Gender	PMIa (h)	Braak stageb	Neuropsychologicalc testing	Memory z-scores	Memory test scores
1	Child	2.5	F	5	—	No	—	—
2	Child	10	M	19	—	No	—	—
3	Adolescent	13	M	18	—	No	—	—
4	Adolescent	19	M	9	—	No	—	—
5	Young	22	F	5	—	No	—	—
6	Young	26	M	8	—	No	—	—
7	Young	35	F	18	—	No	—	—
8	Young	43	F	11	—	No	—	—
9	Young	45	M	13	—	No	—	—
10	Middle-Aged	50	F	48	—	No	—	—
11	Middle-Aged	52	M	23	—	No	—	—
12	Middle-Aged	57	F	8	—	No	—	—
13	Normal Old	72	M	17	II	No	—	—
14	Normal Old	73	M	16	III–IV	No	—	—
15	Normal Old	74	M	25	II	No	—	—
16	Normal Old	76	M	17	II	No	—	—
17	Normal Old	77	M	15	—	No	—	—
18	Normal Old	77	F	15	III	No	—	—
19	Normal Old	82	M	24	III	No	—	—
20	Normal Old	83	F	33	III–IV	No	—	—
21	Normal Old	88	M	12	III–IV	Yes	−0.89	5/10d
22	Normal Old	89	F	6	III–IV	Yes	0.68	8/10e
23	Normal Old	89	F	9	II	Yes	0.68	8/10d
24	Normal Old	90	M	3	III	Yes	−0.36	6/10d
25	Normal Old	91	M	2	III	No	—	—
26	Normal Old	93	F	22	IV	No	—	—
27	Normal Old	96	F	5	IV	Yes	0.68	8/10d
28	SuperAger	95	F	5	0	Yesf	1.21	9/10f
29	SuperAger	87	F	11	III	Yes	2.27	13/15e
30	SuperAger	90	F	5	II	Yes	1.66	11/15e
31	SuperAger	89	F	10	0–I	Yes	1.21	9/10d
32	SuperAger	90	F	4	III	Yes	1.97	12/15e

^aPMI, postmortem interval.

^bBraak stage 0 denotes absence of neurofibrillary tangles, and Braak state VI represents the highest density and most widespread distribution commonly observed in Alzheimer's disease.

^cCognitive measures were not identical for all participants. Cognitive scores are provided as actual/possible score.

^dDelayed recall score from the CERAD  word list (Morris et al. 1989).

^eDelayed recall score from the RAVLT (Schmidt 2004).

^fTotal score from the telephone interview for cognitive status (Brandt and Folstein 1988) was 49/50, which included a delayed recall score of 9/10 on a 10-word list recall test. CERAD norms were used to establish z-score in this case.