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  • 1 School of Science, Engineering and Environment, University of Salford, Manchester, UK
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Background and aims

Studies combining brain activity measures with behavior have the potential to reveal more about animal cognition than either on their own. However, brain measure procedures in animal studies are often practically challenging and cost-prohibitive. Therefore, we test whether a simple measure of ear temperature can be used to index hemispheric brain activation using a handheld thermoscanner. Cortisol levels are correlated with the activation of the right cortical region, implying that, when stressful situations are experienced, increased right hemisphere activation occurs. This leads to corresponding locally detectable increases in ipsilateral ear temperature.

Methods

We compared right- and left-ear temperatures of 32 domestic dogs under non-stressful and partially stressful conditions.

Results

We detected significant elevations in right-ear temperature – but not left-ear temperature – relative to baseline readings in the partially stressful condition that were not detected in the non-stressful condition.

Discussion

These findings provide encouraging support for the notion that tympanic membrane temperature readings can provide a simple index for canine hemispheric brain activation, which can be combined with data on behavioral decision-making, expectancy violations, or other measures of emotional processing. Devices are cheap, simple to use, portable, and only minimally invasive providing a means for real-time brain and behavior measurements to be conducted in real-world settings.

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Biologia Futura
Language English
Size A4
Year of
Foundation
2019 (1950)
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia  
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 2676-8615 (Print)
ISSN 2676-8607 (Online)