John Libbey Eurotext

Electrophysiological characterisation of myoclonic-atonic seizures in symptomatic continuous spike-waves during slow sleep syndrome Volume 11, issue 1, March 2009

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  • Electrophysiological characterisation of myoclonicatonic seizures in symptomatic continuous spike-waves during slow sleep syndrome
  • Electrophysiological characterisation of myoclonicatonic seizures in symptomatic continuous spike-waves during slow sleep syndrome
  • Electrophysiological characterisation of myoclonicatonic seizures in symptomatic continuous spike-waves during slow sleep syndrome

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Authors
Service de neurologie, Hôpital de Jolimont, Haine Saint-Paul, Belgium, Centre neurologique William Lennox, Université Catholique de Louvain, Ottignies LLN, Belgium, Service de pédiatrie, Hôpital de Jolimont, Haine Saint-Paul, Belgium

Sudden epileptic falls are frequently reported in continuous spike-waves during slow sleep (CSWS) syndrome. Inhibitory seizures are usually considered as the underlying mechanism. However, published polygraphic recordings are rare. We report the case of a 22 month-old boy suffering from a symptomatic CSWS syndrome associated with a perinatal stroke involving the right middle cerebral artery territory. He presented with psychomotor regression and daily multiple falls related to myoclonic-atonic seizures. Neurophysiological examination showed secondary generalized myoclonus systematically correlated with a bilateral spike spreading from the right central area. This confirms that positive myoclonus, in addition to negative myoclonus, may be responsible for epileptic falls in CSWS syndrome. [Published with video sequences]