THE NEUROPHYSIOLOGICAL ANALYSIS OF SENSOR Y DISTURBANCES IN TRIGEMINAL NERVE NEUROPATHY

52 patients with various types of trigeminal nerve neuropathy were exa mined in terms of trigeminal somatosensory evoked potentials (TSEP). T he increase of latent periods and the decrease of N-5 - N-33 amplitude components as well as disappearance of some separate components of th is period were observed in patients with moderate facial pain and hype rstesia when sore side was stimulated. Meanwhile the alterations level of TSEP correlated with trigeminal hypestesia severity. In a course o f such stimulation all TSEP components disappeared in patients with se vere sensory deficit and this turned out to be unfavourable prognostic sign pointing out the small perspectivity of conservative antialgesic therapy. TSEP investigation in patients with trigeminal nerve neuropa thy promoted objectivity of face and oral cavity sensory unsufficiency that permitted to estimate both the alteration degree and algesic syn drome severity.