Effects of face/head and whole body cooling during passive heat stress on human somatosensory processing
Nakata H, Namba M, Kakigi R, Shibasaki M
American journal of physiology. Regulatory, integrative and comparative physiology · 9 citations
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- Government
- Japan Society for the Promotion of Science
- Government
- Japan Society for the Promotion of Science (JSPS)
- Grants
- Japan Society for the Promotion of Science (A-15H05361); Japan Society for the Promotion of Science (15H02889)
Based on 2 listed funder(s).
Publication
- Published
- 2017-04-12 · Am J Physiol Regul Integr Comp Physiol · vol. 312 · issue 6 · pp. R996–R1003
- Publisher
- American Physiological Society
- Cited
- 11 citations · more than 68% of similar papers · 0.5× the field average
- References
- 39 works
- Access
- Paywalled
- Research areas
- Heart Rate Variability and Autonomic Control · Thermoregulation and physiological responses · Infrared Thermography in Medicine
- Keywords
- Somatosensory system, Somatosensory evoked potential, Blood flow, Medicine, Anesthesia, Chemistry, Audiology, Psychology, Cardiology, Neuroscience
- MeSH
- head, face, carotid artery, internal, somatosensory cortex, median nerve, humans, heat stress disorders, blood flow velocity, electroencephalography, hyperthermia, induced, electric stimulation, reaction time, body temperature regulation, evoked potentials, somatosensory, regional blood flow, neural conduction, time factors, male, young adult, healthy volunteers
4 authors
From JP
- Hiroki NakataNara Women's University
- Mari NambaNara Women's University
- Ryusuke KakigiNational Institute for Physiological Sciences
- Manabu Shibasaki · correspondingNara Women's University
Abstract
We herein investigated the effects of face/head and whole body cooling during passive heat stress on human somatosensory processing recorded by somatosensory-evoked potentials (SEPs) at C4' and Fz electrodes. Fourteen healthy subjects received a median nerve stimulation at the left wrist. SEPs were recorded at normothermic baseline (Rest), when esophageal temperature had increased by ~1.2°C (heat stress: HS) during passive heating, face/head cooling during passive heating (face/head cooling: FHC), and after HS (whole body cooling: WBC). The latencies and amplitudes of P14, N20, P25, N35, P45, and N60 at C4' and P14, N18, P22, and N30 at Fz were evaluated. Latency indicated speed of the subcortical and cortical somatosensory processing, while amplitude reflected the strength of neural activity. Blood flow in the internal and common carotid arteries (ICA and CCA, respectively) and psychological comfort were recorded in each session. Increases in esophageal temperature due to HS significantly decreased the amplitude of N60, psychological comfort, and ICA blood flow in the HS session, and also shortened the latencies of SEPs (all, P < 0.05). While esophageal temperature remained elevated, FHC recovered the peak amplitude of N60, psychological comfort, and ICA blood flow toward preheat baseline levels as well as WBC. However, the latencies of SEPs did not recover in the FHC and WBC sessions. These results suggest that impaired neural activity in cortical somatosensory processing during passive HS was recovered by FHC, whereas conduction velocity in the ascending somatosensory input was accelerated by increases in body temperature.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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