Table 1.
Characteristics of study sample (MCI, healthy elderly and healthy young).
| Variable | MCI | Healthy elderly (HE) | Healthy young (HY) |
P
(HE versus MCI) |
P
(HE versus HY) |
|---|---|---|---|---|---|
| Age | 80.9 ± 8.4 | 73.9 ± 9.9 | 20.4 ± 3.1 | 0.09 | 0.00∗∗ |
| MMSE total score | 16.9 ± 6.7 | 30 ± 0 | 30 ± 0 | ||
| RT (ms) | 511.5 ± 203.2 | 426.8 ± 77.3 | 361.8 ± 55.3 | 0.22 | 0.04∗ |
| Correct rate (%) | 95.4 ± 10.1 | 98.2 ± 2.8 | 99.2 ± 2.0 | 0.27 | 0.41 |
| Amplitude (μV) | 4.5 ± 1.4 | 10.5 ± 4.4 | 12.3 ± 4.1 | 0.00∗∗ | 0.48 |
| Latency (ms) | 405.6 ± 33.8 | 385.3 ± 36.6 | 326.1 ± 31.1 | 0.26 | 0.01∗ |
Note: RT means reaction time; ∗P < 0.05; ∗∗P < 0.01.