BRAIN-STEM SOMATOSENSORY DYSFUNCTION IN A CASE OF LONG-STANDING LEFT HEMISPHERECTOMY WITH REMOVAL OF THE LEFT THALAMUS - A NASOPHARYNGEAL AND SCALP SEP STUDY

Authors
RESTUCCIA D DILAZZARO V VALERIANI M MARIOTTI P TORRIOLI MG TONALI P MAUGUIERE F
Citation
D. Restuccia et al., BRAIN-STEM SOMATOSENSORY DYSFUNCTION IN A CASE OF LONG-STANDING LEFT HEMISPHERECTOMY WITH REMOVAL OF THE LEFT THALAMUS - A NASOPHARYNGEAL AND SCALP SEP STUDY, Electroencephalography and clinical neurophysiology. Evoked potentials, 100(3), 1996, pp. 184-188
Citations number
23
Categorie Soggetti
Neurosciences
Journal title
Electroencephalography and clinical neurophysiology. Evoked potentials → ACNP
ISSN journal
01685597
Volume
100
Issue
3
Year of publication
1996
Pages
184 - 188
Database
ISI
SICI code
0168-5597(1996)100:3<184:BSDIAC>2.0.ZU;2-0
Abstract
We have studied median nerve somatosensory evoked potentials (SEPs) in a patient who had undergone early surgical removal of the left cerebr al hemisphere and left thalamus. Stimulation of the right side evoked normal latency P9, P11 and P13 potentials at scalp as well as at nasop haryngeal (NP) leads, while P14 and N18 potentials were absent. These SEP abnormalities, that have been described previously in cervico-medu llary lesions and in comatose patients with upper brain-stem involveme nt, suggest that in our patient the removal of the left thalamus has c aused retrograde degeneration of the cuneate-thalamic projections. Mor eover, this study confirms that P13 and P14 potentials have different generators.