Table 1.

Sample characteristics and cognitive performance

	Cognitively normal elderly subjects (N = 26)
Age, years	71.91 ± 5 [61.44–82.29]
Sex, male/female	10/16
Years of education	13.69 ± 2.99 [9–20]
fMRI task accuracy, %	0.8 ± 0.06 [0.71–0.91]
MMSE score (maximum 30)	29.42 ± 0.86 [27–30]
CERAD word list delayed free recall score (maximum 10)	8.83 ± 1.39 [6–10]
Geriatric Depression Scale score	3.23 ± 3.01 [0–10]
APOE ε4 carriers/noncarriers	9/17

Abbreviations: APOE Apolipoprotein E, CERAD Consortium to Establish a Registry for Alzheimer’s Disease, fMRI Functional magnetic resonance imaging, MMSE Mini Mental State Examination

Numbers are expressed as mean ± SD. Ranges are shown in square brackets