Journal article
Recovery functions of common peroneal, posterior tibial and sural nerve somatosensory evoked potentials
Electroencephalography and clinical neurophysiology / Evoked potentials section, Vol.85(5), pp.337-344
1992
DOI: 10.1016/0168-5597(92)90138-2
PMID: 1385094
Abstract
We studied recovery functions of the somatosensory evoked potentials (SEPs) of common peroneal (CPN), posterior tibial (PTN) and sural nerves (SN) using a paired conditioning-test paradigm. The interstimulus interval (ISI) of paired stimuli ranged from 2 to 400 msec. In all SEPs with ISIs of 12–20 msec, the amplitude recovery was close to or beyond 100% of the control response, though their latencies and wave forms were not the same as the control. Further increases of the ISI resulted in significant depression of SEP (late phase suppression), most markedly in CPN, and less prominently in SN-SEP. With a longer than 50 msec ISI there was progressive recovery of SEP, but full recovery differed depending on the nerve stimulated; 400 msec ISI was required for CPN-, 250 msec for PTN- and 100 msec for SN-SEP. The peroneal nerve block by local anesthetic injected just distal to the stimulus electrodes abolished the late phase SEP suppression observed before the nerve block. These findings suggest that the late phase SEP suppression is attributable to the “secondary” afferents as a result of activation of peripheral receptors (muscle, joint and/or cutaneous) by the efferent volley initiated from the stimulus point. The greater and longer duration of peripheral receptor activation in CPN than in PTN or SN stimulation could explain the more pronounced and the longer duration of late phase suppression in CPN-SEP.
Details
- Title: Subtitle
- Recovery functions of common peroneal, posterior tibial and sural nerve somatosensory evoked potentials
- Creators
- Takanori Saito - Department of Orthopaedic Surgery at Kansai Medical University, Osaka, JapanThoru Yamada - Division of Clinical Electrophysiology, Department of Neurology, University of Iowa College of Medicine, Iowa City, IA 52242, U.S.AAkira Hasegawa - Department of Neurosurgery, Niigata University, Niigata, JapanYoshihiko Matsue - Department of Psychiatry at Tohoku University, Sendai, JapanTakumi Emori - Department of Neurology at Kanazawa Medical University, JapanHiroaki Onishi - Department of Neurosurgery at Kanazawa University, Kanazawa, JapanTatsuo Fuchigami - Department of Pediatrics, Nihon University, Tokyo, Japan
- Resource Type
- Journal article
- Publication Details
- Electroencephalography and clinical neurophysiology / Evoked potentials section, Vol.85(5), pp.337-344
- DOI
- 10.1016/0168-5597(92)90138-2
- PMID
- 1385094
- NLM abbreviation
- Electroencephalogr Clin Neurophysiol
- ISSN
- 0168-5597
- eISSN
- 1872-6380
- Publisher
- Elsevier Ireland Ltd
- Language
- English
- Date published
- 1992
- Academic Unit
- Neurology
- Record Identifier
- 9984020890902771
Metrics
25 Record Views