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Die Naturwissenschaften2022; 109(5); 41; doi: 10.1007/s00114-022-01811-y

Testing individual variations of horses’ tactile reactivity: when, where, how?

Abstract: Tactile perception is involved in a variety of contexts (adaptations to climatic conditions, protection of the body against external dangers…) and is as important as the other sensory modalities for the survival of an individual. This tactile modality has been particularly well studied in humans, revealing high individual variations modulated by a variety of intrinsic and extrinsic factors such as age, sex, pathological disorders, or temperament. Tactility is also involved in animals' social lives, although there are disparities between species. For example, social tactile contact among horses is limited, but this does not mean that they do not react to tactile stimuli but rather with their very thin skin they are able to detect minute stimuli (although they respond more to larger stimuli). Despite a fairly large effort to characterize it, there are controversies concerning equine tactile sensitivity. In this review, we examine studies that have used the same tool (von Frey filaments) and try to disentangle what could explain the differences observed. It appears that many aspects are poorly known or controversial and that the procedures may be so different that the results of different studies cannot be compared. We went further by testing tactile reactivity of a population of unridden horses and found that four factors influenced their tactile reactivity (type of horse, filament size, body area, time of day). These results could explain some of the discrepancies observed in the literature and suggest, in particular, that more attention should be paid to the context of the test.
© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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Publication Date: 2022-08-11 PubMed ID: 35951112PubMed Central: 7058305DOI: 10.1007/s00114-022-01811-yGoogle Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research examines the variations in tactile sensitivity in horses, revealing unique differences modulated by factors such as type of horse, filament size, body area, and time of day. The study contributes to our understanding of the tactile characteristics of horses and provides insights that may explain the discrepancies observed in previous literature.

Introduction

  • The study is primarily focused on tactile perception among horses, recognizing it as an essential sensory modality for the survival of an individual. It plays various roles, such as contributing to their adaptions to various climatic conditions and offering protection against external threats.
  • While the tactile modality has been extensively studied in humans, revealing substantial individual variations based on factors like age, sex, pathological disorders, and temperament, its role in animals is less well-documented, with noticeable disparities between species.

Tactility in Horses

  • In the case of horses, social tactile contact is limited, but they still respond to tactile stimuli due to their thin skin, which enables them to detect even minute stimuli.
  • However, horses tend to respond more prominently to larger stimuli. Despite this, there are controversies regarding the tactile sensitivity of horses, highlighting a gap in the understanding of their tactile characteristics.

Research Approach

  • The researchers used von Frey filaments, a standard tool used in measuring tactile sensitivity, to compare studies and decipher the causes of observed differences.
  • The study also includes an experimental component, where the tactile reactivity of a group of unridden horses was tested, moving beyond the mere review of existing literature.

Findings and Implications

  • The findings revealed that four factors influenced tactile reactivity in horses: the type of horse, the size of the filament, the body area on which the filament was applied, and the time of day the test was carried out.
  • These results enrich our understanding of tactile sensitivity in horses, and could provide explanations for some of the inconsistencies found in previous research.
  • The study also emphasizes the importance of considering the context of the test when studying sensory modalities in animals, suggesting that more attention should be given to this aspect in future research.

Cite This Article

APA
Gueguen L, Lerch N, Grandgeorge M, Hausberger M. (2022). Testing individual variations of horses’ tactile reactivity: when, where, how? Naturwissenschaften, 109(5), 41. https://doi.org/10.1007/s00114-022-01811-y

Publication

Die Naturwissenschaften
ISSN: 1432-1904
NlmUniqueID: 0400767
Country: Germany
Language: English
Volume: 109
Issue: 5
Pages: 41

Researcher Affiliations

Gueguen, Léa
  • Université de Rennes, Laboratoire d'Ethologie Animale Et Humaine, UMR 6552, CNRS, Université de Caen-Normandie, Station Biologique, 35380, Paimpont, France. lea.gueguen@univ-rennes1.fr.
Lerch, Noémie
  • Université de Rennes, Laboratoire d'Ethologie Animale Et Humaine, UMR 6552, CNRS, Université de Caen-Normandie, Station Biologique, 35380, Paimpont, France.
Grandgeorge, Marine
  • Université de Rennes, Laboratoire d'Ethologie Animale Et Humaine, UMR 6552, CNRS, Université de Caen-Normandie, Station Biologique, 35380, Paimpont, France.
Hausberger, Martine
  • Université de Rennes, Laboratoire d'Ethologie Animale Et Humaine, UMR 6552, CNRS, Université de Caen-Normandie, Station Biologique, 35380, Paimpont, France.

MeSH Terms

  • Animals
  • Horses
  • Humans
  • Touch

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Citations

This article has been cited 1 times.
  1. Rochais C, Lerch N, Gueguen L, Schmidlin M, Bonamy O, Grandgeorge M, Hausberger M. Horses' Tactile Reactivity Differs According to the Type of Work: The Example of Equine-Assisted Intervention.. Vet Sci 2023 Feb 7;10(2).
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