Table 1.
Summary of cortical and cerebellar asymmetries of the left-handed (LH) and right-handed (RH) twin.
| LH twin | RH twin | |
|---|---|---|
| Cerebral cortical fMRI activation | ||
| Verbal | Right > left* | Left > right |
| Visuo-spatial attention | Left > right* | Right > left |
| Anatomy | ||
| Cortical torque | Clockwise* | Counter-clockwise |
| Cerebellar fMRI activation | ||
| Verbal | Left > right* | Right > left |
| Visuo-spatial attention | Left > right | – |
| Anatomy | ||
| Cerebellar torque | Clockwise | Clockwise |
| Volume | ||
| Hemispheric | Right > left | Left > right |
| Lobule V | Left > right | Right > left |
| Lobule VII | Left ≥ right | Left > right |
*
Atypical.
fMRI, functional magnetic resonance imaging.