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Recent case reports describe the occurrence of a more or less pure Gerstmann syndrome in association with a focal lesion in the posterior perisylvian territory of the brain's left hemisphere.In addition,an electrocortical stimulation study reported the Gerstmann symptoms combination and a number of other symptom combinations on stimulation of small areas in the left posterior parietotemporal cortex.The neuropsychological implications of these and other recent findings are considered in light of the variety of"syndromes"produced by lesions in this region,the rare occurrence of Gerstmann's syndrome,and its appearance as a consequence of lesions in diverse cerebral areas. |
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