Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-4493

Wydenkeller, S; Wirz, R; Halder, P (2008). Spinothalamic tract conduction velocity estimated using contact heat evoked potentials: what needs to be considered. Clinical Neurophysiology, 119(4):812-821.

[img]Accepted Version
PDF - Registered users only
1MB

View at publisher

Abstract

Objective: Laser-evoked potentials have been shown to be clinically useful for the electrophysiological assessment of nociceptive pathways. Contact heat evoked potentials (CHEP) are less established but might be advantageous for clinical purposes. This study aimed at determining the conduction velocity (CV) of central pain (spinothalamic tract, STT) pathways using contact heat stimulation in order to replicate previous findings using laser stimulation.

Methods: Contact heat stimulation 3 degrees C higher than the pain threshold was applied at different body locations in 20 subjects.

Results: The CHEP latencies correlated significantly with the respective pain thresholds. Without normalization for this effect no significant linear regression between distance to the brain and the latencies was found. Conversely, if thresholds were considered, the regression was significant and the CV of the STT (ranging between 11.2 and 13.4m/s) was comparable to CVs estimated after laser stimulation.

Conclusions: Pain thresholds seem crucial in interpreting CHEP latencies. It is suggested that the rather low heating rate is responsible for the dependence of latencies on the pain thresholds.

Significance: This study shows the importance of pain thresholds and their control to attain valid CV of the STT after contact heat stimulation in healthy subjects.

Citations

Altmetrics

Downloads

3 downloads since deposited on 23 Oct 2008
0 downloads since 12 months

Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
DDC:610 Medicine & health
Date:2008
Deposited On:23 Oct 2008 10:46
Last Modified:23 Nov 2012 13:37
Publisher:Elsevier
ISSN:1388-2457
Publisher DOI:doi:10.1016/j.clinph.2007.12.007
PubMed ID:18261955

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page