Rats May Take into Account Dtheir Own Body Weight

306

Abstract

In animals, the awareness of own body is expressed in their ability to take into account various parameters of their bodies in the relationship with the environmental objects. Currently, one of the areas of these studies is the ability of animals to perceive their bodies as a physical obstacle to solve a problem. We studied the ability of brown rats to consider their own body weight. To solve the experimental problem, the rats were supposed to receive the bait by crossing one of three bridges located above the floor. The bridges could be installed in a fixed or unfixed position. In the second case, when the rat tried to cross the bridge, it fell. Accordingly, the rat needed to correlate its body weight with the strength of the support. We found that 14 out of 41 tested rats could solve this problem. During the experiment, these rodents demonstrated characteristic “trying movements”, during which, we believe, they correlated their own weight with the reliability of the bridge.

General Information

Keywords: brown rats, self-awareness, body-awareness, weight, body weight awareness, mirror self- recognition.

Journal rubric: Evolutionary and Comparative Psychology

Article type: scientific article

DOI: https://doi.org/10.17759/exppsy.2021140303

Funding. The study was supported by the Russian Foundation for Basic Research (RFBR), project # 20-013-00546

For citation: Khvatov I.A., Sokolov A.Y., Kharitonov A.N. Rats May Take into Account Dtheir Own Body Weight. Eksperimental'naâ psihologiâ = Experimental Psychology (Russia), 2021. Vol. 14, no. 3, pp. 40–49. DOI: 10.17759/exppsy.2021140303.

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Information About the Authors

Ivan A. Khvatov, PhD in Psychology, Head, Center for Research and Education in Biopsychology and Chair of General Psychology, Moscow Institute of Psychoanalysis, Moscow, Russia, ORCID: https://orcid.org/0000-0002-6939-244X, e-mail: ittkrot1@gmail.com

Alexey Y. Sokolov, PhD in Biology, Chief Research Scientist, Center for Science and Educational of Biopsychological Research, Moscow Institute of psychoanalysis, Moscow, Russia, ORCID: https://orcid.org/0000-0002-6927-6473, e-mail: apophis-king@mail.ru

Alexandr N. Kharitonov, PhD in Psychology, Senior Researcher, Institute of Psychology, Russian Academy of Sciences, Scientific and Educational Center for Biopsychological Research, Moscow Institute of Psychoanalysis (NOCHU VO “Moscow Institute of Psychoanalysis”); Leading Researcher at the Center for Experimental Psychology, Moscow State Psychological and Pedagogical University (FSBEI HE MGPPU), Deputy editor-in-chief of the scientific journal "Experimental Psychology", Moscow, Russia, ORCID: https://orcid.org/0000-0002-4801-9937, e-mail: ankhome47@list.ru

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