Yawning reduces facial temperature in the high-yawning subline of Sprague-Dawley rats
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- 作者：Jose R. Eguibar ; Carlos A. Uribe ; Carmen Cortes ; Amando Bautista…
- 关键词：Thermoregulation ; Head cooling ; Thermography ; Brain circulation ; Grooming ; Anxiety
- 刊名：BMC Neuroscience
- 出版年：2017
- 出版时间：December 2017
- 年：2017
- 卷：18
- 期：1
- 全文大小：1319KB
- 刊物主题：Neurosciences; Neurobiology; Animal Models;
- 出版者：BioMed Central
- ISSN：1471-2202
- 卷排序：18
文摘
BackgroundYawning is a stereotyped behavior that enhances blood flow to the skull, and the resulting counterflow has been hypothesized as a mechanism for brain cooling. Studies have shown that yawns are strongly associated with physiological and pathological conditions that increase brain temperature, and that they are followed by equivalent decreases in brain temperature. However, measured reductions in cranial or facial temperatures following yawning have yet to be reported, to our knowledge. To accomplish this, we used a subline of Sprague-Dawley rats that yawn at a much greater rate (20 yawns/h) than do outbred Sprague-Dawley rats (2 yawns/h).