LPC repetition effect (550–800 ms, Cz) | Global LPC repetition effect (550–800 ms, all sites) | |||
---|---|---|---|---|
MCI (n=14) | All (n=28) | MCI (n=14) | All (n=28) | |
Pearson correlations between ERP repetition effects (mean amplitude of difference between new and repeated items in a 550 to 800 ms latency window for congruous items) and neuropsychological tests of verbal memory. | ||||
*p < 0.05; **p < 0.01. | ||||
CERAD, consortium to establish a registry for Alzheimer's disease; CVLT, California verbal learning test31; DRS, dementia rating scale30; LPC, late positive component; MCI, mild cognitive impairment. | ||||
CVLT 31 | ||||
List A, total 1–5 | 0.73** | 0.53* | 0.68** | 0.53** |
Short delay – free recall | 0.60* | 0.51* | 0.54* | 0.51** |
Short delay – cued recall | 0.51 | 0.41* | 0.37 | 0.41* |
Long delay – free recall | 0.41 | 0.38* | 0.33 | 0.44* |
Long delay – cued recall | 0.46 | 0.35 | 0.29 | 0.38* |
Discriminatability | 0.56* | 0.44* | 0.50 | 0.44* |
CERAD word list 32 | ||||
Immediate recall | 0.67* | 0.37 | 0.71* | 0.43* |
Delayed recall | 0.59 | 0.37 | 0.65* | 0.47* |
Other | ||||
DRS30 – memory | 0.40 | 0.40* | 0.29 | 0.36 |
DRS – total | 0.05 | 0.20 | 0.07 | 0.29 |
Age | −0.27 | −0.30 | −0.35 | −0.25 |
Education | −0.48 | −0.16 | −0.49 | −0.10 |