TABLE 4.
Mean (+/− s.e.) Percentage White Matter for Humans and Chimpanzees
| Region | Human | Chimp | F | DIFF | ||
|---|---|---|---|---|---|---|
| Frontal | ||||||
| Caudal Middle Frontal | 3.424 | (.414) | 4.247 | (.542) | 40.26 | H<C |
| Lateral Orbital Frontal | 3.082 | (.222) | 2.675 | (.599) | 11.04 | H>C |
| Medial Orbital Frontal | 1.908 | (.272) | 1.748 | (.301) | 4.31 | H>C |
| Para-central | 2.036 | (.211) | 2.601 | (.329) | 57.53 | H<C |
| Pars opercularis | 1.598 | (.194) | 1.686 | (.315) | 1.54 | H=C |
| Pars orbitalis | 0.493 | (.056) | 0.353 | (.129) | 26.88 | H>C |
| Pars triangularis | 1.631 | (.184) | 1.214 | (.313) | 36.18 | H>C |
| Pre Central | 6.507 | (.545) | 9.777 | (.981) | 232.79 | H<C |
| Rostral Middle Frontal | 6.397 | (.695) | 4.697 | (.730) | 79.35 | H>C |
| Superior Frontal | 8.461 | (.547) | 8.048 | (.737) | 5.6 | H>C |
| Frontal Pole | 0.161 | (.063) | 0.091 | (.043) | 24.02 | H>C |
| Insula | 6.859 | (.446) | 4.827 | (.875) | 117.17 | H>C |
| Temporal | ||||||
| Bank STS | 1.354 | (.215) | 2.014 | (.250) | 111.43 | H<C |
| Entorhinal | 0.247 | (.051) | 0.247 | (.094) | 0.01 | H=C |
| Fusiform | 2.719 | (.231) | 2.299 | (.412) | 21.74 | H>C |
| Inferior Temporal | 2.416 | (.253) | 2.014 | (.282) | 31.33 | H>C |
| Middle Temporal | 2.340 | (.248) | 2.291 | (.337) | 0.37 | H>C |
| Parahippocampal | 0.712 | (.100) | 0.673 | (.269) | 0.5 | H>C |
| Superior Temporal | 3.176 | (.257) | 3.106 | (.371) | 0.67 | H=C |
| Temporal Pole | 0.186 | (.052) | 0.215 | (.105) | 1.6 | H=C |
| Transverse Temporal | 0.324 | (.052) | 0.294 | (.040) | 6.21 | H>C |
| Parietal | ||||||
| Inferior Parietal | 4.937 | (.506) | 4.943 | −0.677 | 0.01 | H=C |
| Post Central | 3.139 | (.327) | 4.335 | (.893) | 42.93 | H<C |
| Precuneus | 4.477 | (.349) | 3.395 | (.523) | 81.55 | H>C |
| Superior Parietal | 5.453 | (.467) | 5.334 | (.619) | 0.65 | H=C |
| Supramarginal | 4.219 | (.424) | 4.209 | (.355) | 0.01 | H=C |
| Occipital | ||||||
| Cuneus | 0.873 | (.101) | 0.783 | (.316) | 1.97 | H=C |
| Lateral Occipital | 3.707 | (.462) | 3.033 | −0.822 | 14.03 | H>C |
| Lingual | 2.051 | (.320) | 2.232 | (.472) | 2.77 | H=C |
| Peri-calcarine | 1.207 | (.234) | 1.492 | (.407) | 10.11 | H<C |
| Cingulate | ||||||
| Caudal Anterior Cingulate | 1.861 | (.200) | 1.798 | (.222) | 1.23 | H=C |
| Rostral Anterior Cingulate | 1.296 | (.190) | 1.354 | (.310) | 0.68 | H=C |
| Posterior Cingulate | 2.702 | (.201) | 2.389 | −0.276 | 23.28 | H>C |
| Isthmus Cingulate | 1.917 | (.196) | 1.647 | −0.243 | 20.76 | H>C |
Red indicates human values significantly less than chimpanzees; Blue values indicate human values significantly higher than chimpanzee values. All univariate F-values evaluated at p < .05 with 1 and 52 degrees of freedom.