Neurophysiological studies in GM1, gangliosidosis |
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Authors: | A. Harden Z. Martinovic G. Pampiglione |
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Affiliation: | 1. Department of Clinical Neurophysiology, The Hospital for Sick Children, London 2. Institute of Child Neuropsychiatry, University of Belgrade, Yugoslavia
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Abstract: | Neurophysiological studies(EEG, ERG, VEP) have been carried out on 8 children with proven GM1 gangliosidosis (3 of Type I and 5 of Type II). All the EEGs were abnormal showing an increasing amount of irregular slow activity as the disease progressed. Around 2 to 3 years of age, Type II patients often showed a fluctuating 4–5 c/s rhythmic activity especially prominent in the temporal regions. Paroxysmal activity was not a conspicuous feature in any of the patients. The ERG was normal in all cases but the VEP was variably altered. The EEG / ERG/ VEP findings in GM1 gangliosidosis differ from those seen in most other neurometabolic disorders of childhood. |
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