Table 1.
Means & Standard Deviations for demographic, screening, and behavioral data for each age group.
| Young | Middle | Older | |
|---|---|---|---|
| Age (years) | 23.9 (2.8) | 50.6 (2.4) | 70.1 (4.4) |
| Education (years) | 16.6 (2.6) | 14.5 (2.6) | 17.1 (3.0) |
| Number of current smokers | 0/10 | 4/10 | 0/10 |
| Number who ever smoked during lifetime | 5/10 | 6/10 | 6/10 |
| Dementia Rating Scale Score (144 max) | 142.2 (2.0) | 138.5 (5.4) | 140.9 (2.7) |
| Odor Threshold (dilution steps, 9 max) | 7.7 (1.2) | 6.0 (1.5) | 5.8 (1.7) |
| Olfactory ERP Active Reaction Time (msec) | 1824 (852) | 1752 (862) | 2105 (514) |
| Olfactory ERP Active % Correct Trials | 79.5% | 77.5% | 82.5% |
| Olfactory ERP Active # Trials in Average (20 max) | 11.0 (3.4) | 10.9 (4.5) | 11.3 (2.0) |
| Olfactory ERP Passive # Trials in Average (20 max) | 15.1 (3.9) | 16.5 (2.7) | 13.8 (3.1) |
| Visual ERP Active Reaction Time (msec) | 316 (33) | 413 (177) | 338 (81) |
| Visual ERP Active % Correct Trials | 89.0% | 89.5% | 96.5% |
| Visual ERP Active # Trials in Average (20 max) | 12.1 (4.5) | 10.5 (4.3) | 11.5 (2.0) |
| Visual ERP Passive # Trials in Average (20 max) | 14.9 (4.0) | 16.3 (2.2) | 12.3 (2.9) |