Andrew Gallup Co-Authors Journal Publication

Andrew Gallup of the Psychology Department co-authored a research article with three colleagues from Mexico that was recently published in the peer-reviewed journal BMC Neuroscience. The paper is entitled “Yawning reduces facial temperature in the high-yawning subline of Sprague Dawley rats” and is available online (DOI: 10.1186/s12868-016-0330-3). Using an infrared camera, we effectively evaluated thermal changes in the cornea and concha of a subline of high-yawning rats before, during, and after yawns. Consistent with the brain cooling hypothesis, we show that the maximum temperature in both regions significantly decreased following yawns (concha: −0.3 °C, cornea: −0.4 °C). This study is the first demonstration of yawn-induced thermal cooling on the surface of the skull, providing convergent evidence that this behavior plays a functional role in thermoregulation.