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NEUROLOGY 1986;36:658
© 1986 American Academy of Neurology

Electrical stimulation of Wernicke's area interferes with comprehension

R. P. Lesser, H. Lüders, H. H. Morris, D. S. Dinner, G. Klem, J. Hahn and M. Harrison

Cleveland Clinic Foundation. Cleveland, OH.

Arrays of subdural electrodes were placed over the lateral convexity of the dominant hemisphere for propositional language in four patients with epilepsy as part of an evaluation prior to cortical resections. Stimulation was performed over several days. When we stimulated the posterior temporal language area, reading and comprehension of complex verbal information were impaired, but comprehension of nonverbal and simple verbal data was not affected. Impairment produced by stimulation seemed to be due to language comprehension difficulties, rather than impaired praxis or initial word storage.

Address correspondence and reprint requests to Dr. Lesser, Department of Neurology, Cleveland Clinicl Foundation, 9500 Euclid Avenue, Cleveland, OH 44106.

Accepted for publication September 27, 1985.




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