Table 2.
Sulcal pattern distribution of the ‘H-shaped’ sulcus in orbitofrontal cortex
| SZ | HC | HC (Chiavaras et al.) | ||||
|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |
| Left | ||||||
| Sulcal Type | ||||||
| I | 20 | 40 | 23 | 46 | 24 | 48 |
| II | 17 | 34 | 18 | 36 | 17 | 34 |
| III | 13 | 26 | 9 | 18 | 9 | 18 |
| Total | 50 | 100 | 50 | 100 | 50 | 100 |
| Right | ||||||
| Sulcal Type | ||||||
| I | 21 | 42 | 31 | 62 | 32 | 64 |
| II | 17 | 34 | 14 | 28 | 13 | 26 |
| III | 12 | 24 | 5 | 10 | 5 | 10 |
| Total | 50 | 100 | 50 | 100 | 50 | 100 |
| Total | ||||||
| (Left+Right) | ||||||
| Sulcal type | ||||||
| I | 41 | 41 | 54 | 54 | 56 | 56 |
| II | 34 | 34 | 32 | 32 | 30 | 30 |
| III | 25 | 25 | 14 | 14 | 14 | 14 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 |
SZ = schizophrenia; HC = healthy control. Right-sided column shows results from the previous anatomical study performed by Chiavaras and Petrides (2000).