SUMMARYThe study of Carmon and Bechtoldt reporting that a significant proportion of patients with disease of the right hemisphere show impairment in stereoscopic vision while patients with left hemisphere lesions perform on a normal level was replicated with certain modifications. The results fully confirmed the findings of the Carmon-Bechtoldt study. A majority of right-handed patients with lesions of the right hemisphere performed defectively, and all patients with left hemisphere lesions, including those with aphasia, performed on a normal level. Two left-handed patients with unilateral lesions showed a reversal of this relationship. The results are interpreted as supporting the hypothesis that the right hemisphere plays a crucial role in the realization of stereoscopic vision in man.
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Benton et al. (1970) studied this question.