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January 1, 1927


JAMA. 1927;88(1):45-46. doi:10.1001/jama.1927.02680270045021

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The Brain in Left-Handed Persons  Addressing the Aerztlicher Verein of Frankfort-on-the-Main, recently, Riese, assistant at the Neurologic Institute of that city, delivered an address on the brain in left-handed persons. Righthandedness is commonly regarded as a manifestation of domination of the left cerebral hemisphere, with which is associated the importance of the left hemisphere for linguistic performance and purposeful conduct. By this domination of one cerebral hemisphere over the other, man is differentiated from animals. Heretofore, however, it has been difficult to discover on the surface of the brain any definite morphologic evidence for the domination of the left hemisphere. But in the brains of eminent men a differentiation is possible. In several instances, asymmetry of brain performance has corresponded with asymmetry of brain surface. Investigations on the brain surface of left-handed persons of average endowment, Riese stated, have not as yet been published. On the brain of the painter

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