Neurophysiological investigations of paroxysmal motor disorders aimed to document an epileptic origin are mainly based on methodologies that try to demonstrate a correlation between modifications of the electrical activity of the cerebral cortex and the motor phenomenon. The most common techniques are: a) videopolygraphy, that allows to investigate the characteristics of the motor phenomenon and the eventual existence of an EEG correlate; b) back-averaging techniques of the polygraphic signals, that try to demonstrate the presence of an EEG potential, time-locked to the motor manifestation, not detectable in traditional polygraphy; moreover, they allow to evaluate the pattern of muscular recruitment and the latencies of propagation; c) somatosensory and motor evoked potentials, that provide information on the functionality of the sensori-motor cortex, that can be relevant in the understanding of the pathophysiological mechanisms.
|Translated title of the contribution||Neurophysiological investigations of paroxysmal motor disorders: The approach of the epileptologist|
|Number of pages||4|
|Journal||Bollettino - Lega Italiana contro l'Epilessia|
|Publication status||Published - Oct 2002|
ASJC Scopus subject areas
- Clinical Neurology