Summary
Somatosensory evoked potentials following trigeminal nerve stimulation can regularly be recorded from the contralateral scalp on C5/C6 (10–20 system), a region which overlies the primary face region of the somatosensory cortex. From the first three peaks analyzed (N 13, P 19 and N26), the first positive peak (P 19) is most prominent and reliable and therefore is recommended for the routine measurements of neurophysiological examination.
Zusammenfassung
Nach der Stimulation des N. trigeminus am Mund lassen sich regelmäßig sensible evozierte Potentiale über dem kontralateralen somatosensorischen Cortex ableiten. Innerhalb der ersten 50 msec nach Reizbeginn treten typischerweise zwei negative und zwei positive Potentialschwankungen mit sehr variabler Amplitude auf. Aufgrund der an 55 Normalpersonen ermittelten mittleren Latenzzeiten kann der erste negative Gipfel als N 13, der erste positive Gipfel als P 19 und der zweite negative Gipfel als N 26 definiert werden. N 13 und P 19 zeigen eine Altersabhängigkeit mit leichter Latenzzunahme in der höheren Altersgruppe. P 19 ist wegen seiner konstanten Ausprägung für die klinische Diagnostik besonders geeignet.
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References
Desmedt, J. E., Noël, P.: Average cerebral evoked potentials in the evaluation of lesions of the sensory nerves and of the central somatosensory pathway. In: New development in electromyography and clinical neurophysiology, Vol. 2 (J. E. Desmedt, ed.). Basel: Karger 1973
Dorfman, L. J., Bosley, T. M., Cumminus, K. L.: Electrophysiological localization of central somatosensory lesions in patients with multiple sclerosis. Electroencephalogr. clin. Neurophysiol. 44, 742–753 (1978)
Namerow, N. S.: Somatosensory evoked responses in multiple sclerosis patients with varying sensory loss. Neurology 18, 1197–1203 (1968)
Jones, S. J.: Short latency potentials recorded from the neck and scalp following median nerve stimulation in man. Electroencephalogr. clin. Neurophysiol. 43, 853–863 (1977)
Jones, S. J., Small, D. G.: Spinal and sub-cortical evoked potentials following of the posterior tibial nerve in man. Electroencephalogr. clin. Neurophysiol. 44, 299–306 (1978)
Noël, P., Desmedt, J. E.: Somatosensory cerebral evoked potentials after vascular lesions of the brain-stem and diencephalon. Brain 98, 113–128 (1975)
Small, D. G., Matthews, W. B., Small, M.: The cervical somatosensory evoked potential (SEP) in the diagnosis of multiple sclerosis. J. Neurol. Sci. 35, 211–224 (1978)
Tsumoto, I., Hirose, H., Nonaka, S., Takahashi, M.: Cerebrovascular disease: Changes in somatosensory evoked potentials associated with unilateral lesions. Electroencephalogr. clin. Neurophysiol. 35, 463–473 (1973)
Williamson, P. D., Goff, W. R., Allison, T.: Somato-sensory evoked responses in patients with unilateral cerebral lesions. Electroencephalogr. clin. Neurophysiol. 28, 566–575 (1970)
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Stöhr, M., Petruch, F. Somatosensory evoked potentials following stimulation of the trigeminal nerve in man. J. Neurol. 220, 95–98 (1979). https://doi.org/10.1007/BF00313949
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DOI: https://doi.org/10.1007/BF00313949