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dc.contributor.authorKano, Fumihiro
dc.contributor.authorHirata, Satoshi
dc.contributor.authorDeschner, Tobias
dc.contributor.authorBehringer, Verena
dc.contributor.authorCall, Josep
dc.identifier.citationKano , F , Hirata , S , Deschner , T , Behringer , V & Call , J 2016 , ' Nasal temperature drop in response to a playback of conspecific fights in chimpanzees : a thermo-imaging study ' , Physiology & Behavior , vol. 155 , pp. 83-94 .
dc.identifier.otherRIS: urn:A9DBD31EDCAD0C20FE1DF8CF4581155F
dc.identifier.otherORCID: /0000-0002-8597-8336/work/37477955
dc.descriptionThis study was conducted in part under the first author's postdoc program; the Japan Society for Promotion of Science (JSPS) for study abroad. FK and SH respectively received JSPS KAKENHI Grant Number 26885040 and 26245069. This study was also in part funded by JSPS MEXT KAKENHI Grant Number 24000001, JSPS-LGP-U04, JSPS core-to-core type A CCSN, and MEXT-PRI-Human Evolution.en
dc.description.abstractEmotion is one of the central topics in animal studies and is likely to attract attention substantially in the coming years. Recent studies have developed a thermo-imaging technique to measure the facial skin temperature in the studies of emotion in humans and macaques. Here we established the procedures and techniques needed to apply the same technique to great apes. We conducted two experiments respectively in the two established research facilities in Germany and Japan. Total twelve chimpanzees were tested in three conditions in which they were presented respectively with the playback sounds (Exp. 1) or the videos (Exp. 2) of fighting conspecifics, control sounds/videos (allospecific display call: Exp. 1; resting conspecifics: Exp. 2), and no sound/image. Behavioral, hormonal (salivary cortisol) and heart-rate responses were simultaneously recorded. The nasal temperature of chimpanzees linearly dropped up to 1.5. °C in 2. min, and recovered to the baseline in 2. min, in the experimental but not control conditions. We found the related changes in excitement behavior and heart-rate variability, but not in salivary cortisol, indicating that overall responses were involved with the activities of sympathetic nervous system but not with the measureable activities of the hypothalamus-pituitary-adrenal (HPA) axis. The influence of general activity (walking, eating) was not negligible but controllable in experiments. We propose several techniques to control those confounding factors. Overall, thermo-imaging is a promising technique that should be added to the traditional physiological and behavioral measures in primatology and comparative psychology.
dc.relation.ispartofPhysiology & Behavioren
dc.subjectGreat apeen
dc.subjectSkin temperatureen
dc.subjectBF Psychologyen
dc.titleNasal temperature drop in response to a playback of conspecific fights in chimpanzees : a thermo-imaging studyen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Psychology and Neuroscienceen
dc.contributor.institutionUniversity of St Andrews. Centre for Social Learning & Cognitive Evolutionen
dc.description.statusPeer revieweden

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