Characteristics of abnormal patients (low categories achieved on Wisconsin Card Sorting Test (WCST)) and normal patients
| Abnormal | Normal | |
| No of patients (n) | 39 | 21 |
| Benzodiazepine receptor index (%) | ||
| MCA territory (affected) | 33.8±31.4 | 24.9±28.7 |
| ACA territory | 19.1±16.9* | 10.4±14.6 |
| Cerebral blood flow (ml/100 g/min) | ||
| MCA territory | 42.6±7.7 | 45.0±8.8 |
| ACA territory | 45.2±8.5 | 47.1±10.4 |
| Cerebral metabolic rate of oxygen (ml/100 g/min) | ||
| MCA territory | 3.58±0.38 | 3.79±0.44 |
| ACA territory | 3.70±0.40 | 3.85±0.60 |
| Age (years) | 65±8 | 61±10 |
| Sex, male/female (n) | 28/11 | 17/4 |
| Arterial disease, internal carotid artery/MCA (n) | 28/11 | 15/6 |
| Side of disease, left/right (n) | 19/20 | 9/12 |
| Symptomatic (n) | 23 | 13 |
| Subcortical infarction (n) | 31 | 14 |
| Size (mm2) | 137±194 | 142±208 |
| Frontal infarction (n) | 21 | 10 |
| Wisconsin Card Sorting Test parameters (n) | ||
| Categories achieved | 1.4±1.0* | 4.1±1.0 |
| Total errors | 28.6±7.3* | 15.9±4.2 |
| Perseverative errors (Nelson) | 11.1±8.2* | 3.5±3.0 |
Values are mean±SD.
↵* p<0.05, Mann–Whitney U test.
ACA, anterior cerebral artery; MCA, middle cerebral artery.