Potencial evocado somato-sensitivo em crianças com epilepsias benignas parciais da infancia e pontas evocadas por estimulos somato-sensitivos no eletroencefalograma

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

The present research refers to latencies and amplitudes of cortical components of somatosensory evoked potential through median and posterior tibial nerve stimulation in a group of 20 children with partial idiopathic epilepsy and somato-sensitive evoked spikes on the EEG (one sub-group with benign childhood epilepsy with centrotemporal spikes, 8 cases; another sub-group with other partial idiopathic epilepsies, 12 cases) and compared to latencies and amplitudes of cortical components of 20 normal children and 20 children with benign childhood epilepsy with centrotemporal spikes, but without spikes evoked through somatosensory stimulation. It was therefore possible to demonstrate that: 1. Latency of cortical components of children with epileptic seizures is similar to that of normal children; 2. One or more ofthe components N45, N75, P98 and/or N126 (posterior tibial nerve) with high amplitude occur: in most patients with partial idiopathic childhood epilepsy and with spikes evoked through somatosensory stimulation; in significant proportion in children with benign childhood epilepsy with centrotemporal spikes and without spikes evoked through somatosensory stimulation; and, in greater proportion in children with partial idiopathic childhood epilepsies with spikes evoked through somatosensory stimulation the in children with benign childhood epilepsy with centrotemporal spikes, but without evoked spikes and, in these children, in greater proportion than in normal children. 3. Amplitude of component N35 (median nerve) is greater in children with benign childhood epilepsy with centrotemporal spikes and without spikes evoked through somatosensory stimulation than in normal children; 4. Amplitude of component N98, obtained through posterior tibial nerve stimulation is greater in children with partial idiopathic epilepsy and with spikes evoked through somatosensory stimulation than in normal children and in those children with benign childhood epilepsy with centrotemporal spikes and without evoked spikes; 5. High amplitude (higher than 7 J.l V) of component N35 is more commonly found in children with benign childhood epilepsy with centrotemporaI spikes, with or without evoked spikes, than in children with other partiaI idiopathic epilepsies and with evoked spikes; 6. High amplitude (higher than 7 J.lV) of component N60 (median nerve) is more ftequently found in individuaIs with benign childhood epilepsy with centrotemporaI spikes and without evoked spikes or, further, in those with partial idiopathic childhood epilepsies and with spikes evoked through somatosensory stimulation than in normal individuaIs; 7. There is no correlation between lateraIization of epileptiform activity and that of corticaI components N35 and P98 with elevated amplitude; 8. PES can contribute to neurophysiological investigation of partiaI idiopathic childhood epilepsies

ASSUNTO(S)

neurofisiologia eletroencefalografia epilepsia nas crianças

ACESSO AO ARTIGO

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