Visual laterality effects and cerebral speech dominance determined by the carotid Amytal test.

Epileptic patients whose speech dominance had been ascertained using the carotid Amytal test were given a verbal-visual half-field task. Patients with left-hemisphere speech dominance, like normal controls, tended to show a RVF effect whereas patients with atypical speech patterns showed a bias in favor of the LVF.