Comparison of selective head cooling versus whole-body cooling

2016 ◽  
Vol 58 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Yalcın Celik ◽  
Aytug Atıcı ◽  
Selvi Gulası ◽  
Cetin Okuyaz ◽  
Khatuna Makharoblıdze ◽  
...  
2019 ◽  
Vol 90 (7) ◽  
pp. 403-410 ◽  
Author(s):  
Ewa Matylda Gulczynska ◽  
Janusz Gadzinowski ◽  
Marcin Kesiak ◽  
Barbara Sobolewska ◽  
Joanna Caputa ◽  
...  

2017 ◽  
Vol 312 (6) ◽  
pp. R996-R1003 ◽  
Author(s):  
Hiroki Nakata ◽  
Mari Namba ◽  
Ryusuke Kakigi ◽  
Manabu Shibasaki

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.


2015 ◽  
Vol 41 (1) ◽  
Author(s):  
Yalçın Çelik ◽  
Aytuğ Atıcı ◽  
Selvi Gülaşı ◽  
Khatuna Makharoblıdze ◽  
Gülçin Eskandari ◽  
...  

2008 ◽  
Vol 64 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Mathias Karlsson ◽  
James R Tooley ◽  
Saulius Satas ◽  
Catherine E Hobbs ◽  
Ela Chakkarapani ◽  
...  

2015 ◽  
Vol 50 (1) ◽  
pp. 27-36 ◽  
Author(s):  
Aytug Atici ◽  
Yalcin Celik ◽  
Selvi Gulasi ◽  
Ali Haydar Turhan ◽  
Cetin Okuyaz ◽  
...  

2011 ◽  
Vol 70 ◽  
pp. 722-722
Author(s):  
S Sarkar ◽  
J R Bapuraj ◽  
S M Donn ◽  
I Bhagat ◽  
J D Barks

1991 ◽  
Vol 155 (1) ◽  
pp. 193-202 ◽  
Author(s):  
ALBERT CRAIG ◽  
JACQUES LAROCHELLE

The rate of heat loss through the stretched wings (Hwings) was studied in resting pigeons preheated to a body temperature (43.7°C) within the range of those recorded during flight. The experimental system was designed to allow the calculation of Hwings from the increase in whole-body cooling rates resulting from exposure of the wings to various wind speeds (0–50 km h−1) at 23°C. The maximum value of HWings was 3.8 W, less than twice the heat production of a resting pigeon. This indicates that the contribution of the wings to heat dissipation during flight may not be nearly as important as has been supposed. At low windspeeds (0–12.5 km h−1), HWings corresponded to about 40% of the resting rate of heat production, and this value is discussed in connection with the various wing postures observed in hyperthermic birds.


Sign in / Sign up

Export Citation Format

Share Document