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Body cooling may not improve somatosensory pathway function in multiple sclerosis
L R Robinson1, G H Kraft, S S Fitts
1Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, USA.
Summary
Cooling multiple sclerosis (MS) patients did not improve their cortical somatosensory evoked potential (SEP) responses. This study found no significant changes in SEP latency or amplitude with reduced body temperature in MS patients or controls.
Area of Science:
- Neuroscience
- Clinical Neurology
Background:
- Multiple sclerosis (MS) is a chronic neurological disease.
- Some MS patients report symptomatic relief with body cooling.
- The effect of cooling on neurophysiological measures in MS is not well understood.
Purpose of the Study:
- To investigate if reducing core body temperature improves cortical somatosensory evoked potential (SEP) responses in individuals with MS.
- To compare SEP responses between MS patients and healthy controls under normothermic and hypothermic conditions.
Main Methods:
- Twenty individuals with definite MS and 20 healthy controls participated.
- Cortical SEPs were recorded following tibial and median nerve stimulation at 3.1 and 6.1 Hz.
- Core body temperature was reduced using a cooling vest and hat.
Main Results:
- Cooling did not significantly alter SEP latency or amplitude in either the MS or control groups.
- No statistically significant differences were observed between groups or stimulation rates with cooling.
- SEP amplitude was lower at 6.1 Hz compared to 3.1 Hz, but this was consistent across groups and conditions.
Conclusions:
- Reducing core body temperature does not appear to improve cortical SEP responses in individuals with MS.
- Observed symptomatic improvements in MS patients with cooling may not correlate with measurable changes in SEP.
- Further research is needed to understand the mechanisms behind cooling-induced symptomatic relief in MS.