Table 2 Mean scores and standard deviations (in parentheses) for each of the background neuropsychology tasks are shown, split by APOE group.

From: APOE-ε4 selectively modulates posteromedial cortex activity during scene perception and short-term memory in young healthy adults

 

APOE-ε4 carriers

Non-carriers

Memory Recall54,55

 WMS III immediate story recall (/75)

40.27 (9.04)

41.53 (6.80)

 WMS III delayed story recall (/50)

27.73 (7.37)

26.93 (5.36)

 RCF—delayed recall (/36)*

26.47 (5.46)

24.81 (6.22)

Recognition Memory

 WMS III delayed story recognition (/30)

26.2 (2.78)

26.67 (1.76)

Visuospatial Processing

 RCF—copy (/36)*

35.40 (0.91)

35.23 (1.01)

Semantic Memory56

 CCT (/64)∆

58.53 (2.59)

56.64 (1.74)

Executive Function57,58

 RPCM (/36)

34.33 (1.11)

32.67 (1.67)

 D-KEFS—Visual scanning (secs)*

10.80 (1.47)

10.53 (1.27)

 D-KEFS—Number sequencing (secs)*

11.00 (1.13)

9.92 (1.85)

 D-KEFS—Letter sequencing (secs)*

11.33 (1.50)

10.54 (3.07)

 D-KEFS—Number-letter switching (secs)*

11.20 (0.86)

10.54 (1.85)

 D-KEFS—Motor speed (secs)*

11.20 (1.21)

10.92 (1.44)

  1. Table abbreviations refer to the Wechsler Memory Scale (WMS), Rey Complex Figure (RCF), Camel and Cactus Test (CCT), Raven’s Colored Progressive Matrices (RCPM) and the Delis–Kaplan Executive Function System (D-KEFS). The only significant difference between the APOE-ε4 carrier and APOE-ε4 non-carrier groups was on the Camel and Cactus Test; this was a small (1–2 point) advantage in the APOE-ε4 carrier group.
  2. *scores based on 15 APOE-ε4 carriers and 13 non-carriers; ∆ scores based on 15 APOE-ε4 carriers and 14 non-carriers. The lack of data from 1 or 2 individuals in the APOE-ε4 non-carrier groups reflected attrition in testing compliance near the end of the multiple testing sessions undertaken in this study.
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