Maps of somatosensory evoked potentials (SEPs) to mechanical (tapping) stimuli: comparison with P14, N20, P22, N30 of electrically elicited SEPs |
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| Affiliation: | 1. Department of Computing Science and HPC2N, Umeå University, Sweden;2. Department of Mathematics, University of São Paulo, Brazil;3. National Technical University of Ukraine “Kyiv Polytechnic Institute”, Kiev, Ukraine;4. Institute of Mathematics, Kiev, Ukraine;1. School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran;2. Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran;1. Laboratory of Comprehensive Veterinary Clinical Studies, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa 252-0880, Kanagawa, Japan;2. NORTH LAB Ltd., 2-8-35 Kita, Hondori, Shiroishi-ku, Sapporo 003-0027, Hokkaido, Japan;1. General Surgery, Grant Government Medical College & Sir JJ Group of Hospitals, Mumbai, India;2. Rajiv Gandhi Medical College, Thane, Mumbai, India |
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| Abstract: | Bit mapped color imaging of SEPs was recorded from 19 derivations in 11 healthy volunteers after electrical stimulation of the median nerve at the wrist, index finger digital nerve stimulation, and mechanical stimulation of the index fingertips by an electromechanically driven vibrating thin metallic plate. The latencies of SEP components increased for the various stimulation modalities, being shortestafter median nerve stimulation at the wrist and longest after mechanical stimulation of the index fingertips.The scalp distribution of SEPs to mechanical stimuli was, however, the same as other SEPs, independently of the stimulation employed, and components corresponding to N20 and P22 were recorded only contralaterally to the stimulated side. |
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