| All patients | Group I (n = 20) | Group II (n = 20) | Group III (n = 20) | F/χ2# | P value |
Occipital | 28 (46.7%) | 2 (10%) | 16 (80%) | 10 (50%) | 19.821 | <0.001* |
Medial temporal | 9 (15%) | 0 (0%) | 4 (20%) | 5 (25%) | 6.490 | 0.044* |
Cerebellum | 15 (25%) | 2 (10%) | 1 (5%) | 12 (60%) | 19.733 | <0.001* |
Thalamic | 7 (11.7%) | 0 (0%) | 0 (0%) | 7 (35%) | 15.849 | <0.001* |
Midbrain | 3 (5%) | 1 (5%) | 0 (0%) | 2 (10%) | 2.105 | 0.349 |
Pons | 25 (41.7%) | 15 (75%) | 3 (15%) | 7 (35%) | 15.360 | <0.001* |
Medulla oblongata | 2 (3.3%) | 0 (0.0%) | 0 (0.0%) | 2 (10%) | 4.138 | 0.126 |