The Role of Right Hemisphere Dysfunction in Psychiatric Disorders

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Abstract
In 1861 Broca, a Parisian surgeon, reported a postmortem he had carried out on a man who had lost his ability to speak 20 years previously and who in the intervening period had only regained the use of one phrase: “Tan-tan”. Broca found that this man had an old infarct in his left hemisphere, affecting the posterior portions of the second and third frontal gyri.