The aim of this study was to characterize different patterns of motor activity during hyperkinetic (HK) seizures, in 39 patients studied by video-EEG and/or SEEG, preliminary to epilepsy surgery. 221 HK seizures, out of 416 recorded, were selected for a clinical-kinematic study (Videopoint computerized system); a correlation with extra/intracranial EEG was attempted. We observed 5 different HK motor patterns: (1) symmetrical: with bilateral, widespread HK movements; (2) hemilateral: with HK activity more evident on one body side; (3) hemivertical: with HK manifestations prominently involving upper or lower limbs; (4) axial: with HK movements prevailing in the trunk; (5) "puppet like": with fragmentary, rapid diffuse motor manifestations. Kinematic analysis documented strong qualitative analogies among HK motor patterns of subgroups 1-4, with different body segment involved, and substantial qualitative differences with group 5. Subgroups 1-4 showed heterogeneous ictal onset zone, that in group 2 was contralateral to the HK manifestations, whereas group 5 had quite focal frontal ictal onset discharge. In all groups the symptomatogenic zone, during HK manifestations, was an extended fronto-mesial area. We propose a clinical classification of different HK ictal patterns involving analogue widespread motor circuits (pre-encoded?; Tassinari et al., 2004), possibly modulated by different cortical regions.
|Translated title of the contribution||Different patterns of motor activity during hyperkinetic seizures: A clinical and kinematic study|
|Number of pages||3|
|Journal||Bollettino - Lega Italiana contro l'Epilessia|
|Publication status||Published - Jul 2004|
ASJC Scopus subject areas
- Clinical Neurology