Evoked potentials and electroencephalography in stuttering

Author(s): ElNasser, W. A., Haleem, E. K. A., Bakr, M. S., Trakhan, M. N.

Journal/Book: Folia Phoniatr Logopaed. 2000; 52: Allschwilerstrasse 10, CH-4009 Basel, Switzerland. Karger. 178-186.

Abstract: The study was aimed at finding what factors in evoked potentials and EEG related to stuttering in subjects 625 years of age. Thirty-seven subjects who stuttered and 25 nonstuttering subjects, matched for age, sex and education, were evaluated employing visual evoked potentials, auditory evoked potentials, event-related potentials (P-300), WISC-(IQ), and electroencephalography. A significant reduction of amplitude of P-loo of visual evoked potentia Is was found in stutterers with a significant prolongation of wave latencies I, III, V and interpeak latencies I-III and I-V in brainstem auditory evoked potentials. No significant abnormalities were recorded in P-200, N-200 and P-300 of event-related potentials in stutterers compared with the control group. The dominant EEG rhythm was slower in stutterers with a significant interhemispheric asymmetry compared with the control group. Fifty-four percent of the stutterers had pathological EEG. Epileptiform activities were recorded in 16.2% of stuttering subjects. Focal left temporal spike activity was recorded in 5.4% of stuttering subjects. The findings of this study point to a possible role of an organic etiopathogenesis of stuttering.

Note: Article Khedr E, Assiut Univ Hosp, Dept Neuropsychiat, Assiut, EGYPT

Keyword(s): P300; NONSTUTTERERS; CHILDREN; SEVERITY

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