Table 2.
Performance on neuropsychological screening tests for controls and for patients with PFC damagea
| Group | Posner Cueing (uncued–cued) left/right (ms) | Circle cancellation % missed (left/right) | Circle cancellation % false alarms | Fluency: animals | Fluency: F | Backwards digit span | Incidental memory P (Correct)∧ | Sentence comprehension P (Correct)∧ |
|---|---|---|---|---|---|---|---|---|
| Control (N = 21) | 81.2 (37.8)/54.2 (34.5) | — | — | — | — | — | — | — |
| DMF (N = 10) | 77.6 (59.5)/72.8 (49.9) | 0.4 (0.8)/1.1 (2.4) | 0.06 (0.2) | 19.1 (8.6) | 8.9 (5.8)* | 2.3 (1.3) | 0.78 (0.13) | 0.99 (0.88–1.00) |
| LLF (N = 7) | 65.9 (31.4)/86.8 (32.0) | 0.5 (1.0)/ 0.7 (1.2) | 0.71 (1.9) | 17.8 (7.9)b | 8.2 (3.7)b* | 2.7 (1.2) | 0.81 (0.12) | 0.96 (0.83–1.00) |
| RLF (N = 6 | 50.6 (56.3)/32.8 (39.0) | 1.7 (2.9)/1.0 (2.0) | 0.31 (0.5) | 22.0 (2.7) | 14.5 (3.6) | 2.8 (1.2) | 0.82 (0.11) | 0.95 (0.77–1.00) |
| VMF (N = 17) | 72.8 (37.5)/ 57.2 (37.5) | 1.6 (2.0)/1.9 (2.7)b | 0.08 (0.2) | 17.7 (3.5)c | 10.2 (4.4)c* | 3.2 (1.3) | 0.85 (0.11) | 0.95 (0.77–1.00) |
aValues represent means with standard deviations in parentheses, except for sentence comprehension where the median and range are given instead.
bData missing from one patient.
cData missing from two patients.
*P ≤ 0.05, against RLF two-tailed t test, uncorrected.
∧Montreal patients mostly.