Ictal pattern of EEG and muscular activation in symptomatic infantile spasms: a videopolygraphic and computer analysis |
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| Authors: | Bisulli Francesca Volpi Lilia Meletti Stefano Rubboli Guido Franzoni Emilio Moscano Milena d'Orsi Giuseppe Tassinari Carlo Alberto |
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| Affiliation: | Department of Neurological Sciences, University of Bologna, Bellaria Hospital, Bologna, Italy. francesca.bisulli@neuro.unibo.it |
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| Abstract: | PURPOSE: To investigate ictal muscular phenomena characterizing symptomatic infantile spasms (ISs) and their relation to ictal EEG. METHODS: Four children with severe encephalopathy, neurologic impairment, and refractory ISs related to different dysplastic lesions, underwent videopolygraphic recordings collecting surface electromyogram (EMG) activity from several cranial and limb muscles to evaluate the pattern of muscular recruitment, duration, and side-to-side asymmetry of ISs. Acquired data were stored for off-line analysis by a computerized polygraphic system. RESULTS: Spasms were characterized by a complex pattern of muscular activation. A constant or rostrocaudal propagation pattern was lacking in all patients. Intervals between the onset of EMG activity in different muscles in each spasm were very long:
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| Keywords: | Video-polygraphic recording Muscular pattern Symptomatic infantile spasms Computerized analysis Backaverage |
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