Table 1.

Participant Demographics and Task Performance

	Low SUVR	High SUVR	Total
	N (% Female)	44 (66)	18 (39)	62 (58.07)
Mean Age (SD)	65.36 (10.21)*	73.50 (7.14)	67.73 (10.21)
Mean Education (SD)	15.30 (2.53)	16.33 (2.50)	15.60 (2.54)
Mean MMSE (SD)	28.86 (0.82)	28.89 (0.68)	28.87 (0.78)
Mean CESD (SD)	3.68 (3.79)	3.94 (3.83)	3.76 (3.77)
fMRI Task Accuracy
Control (SD)	97.47 (5.71)	95.53 (7.73)	96.91 (6.36)
Easy (SD)	95.24 (7.72)	93.57 (9.49)	94.76 (8.23)
Medium (SD)	87.25 (15.02)	86.22 (15.95)	86.95 (15.17)
Hard (SD)	71.69 (20.85)	76.18 (17.46)	72.99 (19.89)
fMRI Task RT (sec)
Control (SD)	.71 (.18)	.67 (0.10)	.70 (.16)
Easy (SD)	.86 (.16)	.82 (0.12)	.85 (.15)
Medium (SD)	.93 (.18)	.87 (0.12)	.92 (.16)
Hard (SD)	1.07 (.24)	.97 (0.17)	1.04 (.22)

Note: Low SUVR – less than 1.11 standardized uptake value ratio; High SUVR – greater than or equal to 1.11 standardized uptake value ratio; There were no significant group differences on any measure (p’s > .146) other than age (t(60) = −3.080, p = .003). MMSE - Mini Mental State Exam; CESD – Center for Epidemiologic Study-Depression; Accuracy reported as mean percent accuracy; Response time (RT) reported as a mean of medians in seconds; SD – standard deviation;

^*p < .05.