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| Research article summary (published 29 Jun 2002): |
Sympathetic skin response evoked by laser skin stimulation.
Full Abstract
The objective of this study was to evoke sympathetic skin responses (SSRs) in healthy subjects using laser stimulation and to compare these responses with those induced by conventional electrical stimuli. Twenty healthy subjects were investigated. SSRs were obtained using electrical and laser stimuli delivered to the wrist controlateral to the recording site. The sympathetic sudomotor conduction velocity (SSFCV) was measured in 8 subjects by simultaneously recording the SSR from the hand and the axilla. The latency (L) of the laser-induced SSR (ISSR) was significantly longer than that of the electrically-evoked SSR (eSSR) (mean ISSRL= 1.7 +/- 0.145 ms, mean eSSRL= 1.56 +/- 0.14 ms, p<0.05). The amplitude (A) of the ISSR was lower than the eSSR amplitude (mean ISSRA = 1.31 +/- 0.26 mV, mean eSSRA = 2.59 +/- 0.49 mV, p<0.05). No significant difference between the ISSR and eSSR was observed in either the SSFCV or the variability and reproducibility parameters. Our findings show that SSRs can easily be induced by laser stimuli and that this method shares the technical limitations of conventional eSSRs.
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Author information
Author/s: Rossi, Paolo (P); Truini, Andrea (A); Serrao, Mariano (M); Iannetti, Gian Domenico (GD); Parisi, Leoluca (L); Pozzessere, Giuseppe (G); Cruccu, Giorgio (G);
Affiliation: Department of Clinical Neurology and Otorhinolaryngology, University La Sapienza, Rome, Italy. paolo.rossi90@tin.it
Journal and publication information
Publication Type: Comparative Study; Journal Article
Journal: Functional neurology (Funct Neurol), published in Italy. (Language: eng)
Reference: -2002 Jul-Sep; vol 17 (issue 3) : pp 129-32
Dates: Created 2003/01/28; Completed 2003/03/27; Revised 2006/11/15;
PMID: 12549717, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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