Evoked Potentials and Electroencephalography in Stuttering

The study was aimed at finding what factors in evoked potentials and EEG related to stuttering in subjects 6–25 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 pote...

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Bibliographic Details
Published in:Folia phoniatrica et logopaedica 2000-07, Vol.52 (4), p.178-186
Main Authors: Khedr, Eman, El-Nasser, Waguih Abd, Abdel Haleem, Emad K., Bakr, M. Salama, Trakhan, Mohamed N.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Biological and medical sciences
Brain - physiopathology
Brain Mapping
Child
Child clinical studies
Dominance, Cerebral - physiology
Electroencephalography
Evoked Potentials
Female
Humans
Language and communication disorders
Male
Medical sciences
Original Paper
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Reaction Time - physiology
Stuttering - diagnosis
Stuttering - physiopathology
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Summary:The study was aimed at finding what factors in evoked potentials and EEG related to stuttering in subjects 6–25 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 100 of visual evoked potentials 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.
ISSN:1021-7762
1421-9972
DOI:10.1159/000021532