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Cross-modal perception of human emotion in domestic horses (Equus caballus)

Humans have domesticated many kinds of animals in their history. Dogs and horses have particularly close relationships with humans as cooperative partners. However, fewer scientific studies have been conducted on cognition in horses compared to dogs. Studies have shown that horses cross-modally dist...

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Autores principales: Nakamura, Kosuke, Takimoto-Inose, Ayaka, Hasegawa, Toshikazu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6013457/
https://www.ncbi.nlm.nih.gov/pubmed/29930289
http://dx.doi.org/10.1038/s41598-018-26892-6
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author Nakamura, Kosuke
Takimoto-Inose, Ayaka
Hasegawa, Toshikazu
author_facet Nakamura, Kosuke
Takimoto-Inose, Ayaka
Hasegawa, Toshikazu
author_sort Nakamura, Kosuke
collection PubMed
description Humans have domesticated many kinds of animals in their history. Dogs and horses have particularly close relationships with humans as cooperative partners. However, fewer scientific studies have been conducted on cognition in horses compared to dogs. Studies have shown that horses cross-modally distinguish human facial expressions and recognize familiar people, which suggests that they also cross-modally distinguish human emotions. In the present study, we used the expectancy violation method to investigate whether horses cross-modally perceive human emotions. Horses were shown a picture of a human facial expression on a screen, and they then heard a human voice from the speaker before the screen. The emotional values of the visual and auditory stimuli were the same in the congruent condition and different in the incongruent condition. Horses looked at the speaker significantly longer in the incongruent condition than in the congruent condition when they heard their caretaker’s voices but not when they heard the stranger voice. In addition, they responded significantly more quickly to the voice in the incongruent condition than in the congruent one. To the best of our knowledge, this is the first study to show that horses cross-modally recognized the emotional states of their caretakers and strangers.
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spelling pubmed-60134572018-06-27 Cross-modal perception of human emotion in domestic horses (Equus caballus) Nakamura, Kosuke Takimoto-Inose, Ayaka Hasegawa, Toshikazu Sci Rep Article Humans have domesticated many kinds of animals in their history. Dogs and horses have particularly close relationships with humans as cooperative partners. However, fewer scientific studies have been conducted on cognition in horses compared to dogs. Studies have shown that horses cross-modally distinguish human facial expressions and recognize familiar people, which suggests that they also cross-modally distinguish human emotions. In the present study, we used the expectancy violation method to investigate whether horses cross-modally perceive human emotions. Horses were shown a picture of a human facial expression on a screen, and they then heard a human voice from the speaker before the screen. The emotional values of the visual and auditory stimuli were the same in the congruent condition and different in the incongruent condition. Horses looked at the speaker significantly longer in the incongruent condition than in the congruent condition when they heard their caretaker’s voices but not when they heard the stranger voice. In addition, they responded significantly more quickly to the voice in the incongruent condition than in the congruent one. To the best of our knowledge, this is the first study to show that horses cross-modally recognized the emotional states of their caretakers and strangers. Nature Publishing Group UK 2018-06-21 /pmc/articles/PMC6013457/ /pubmed/29930289 http://dx.doi.org/10.1038/s41598-018-26892-6 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Nakamura, Kosuke
Takimoto-Inose, Ayaka
Hasegawa, Toshikazu
Cross-modal perception of human emotion in domestic horses (Equus caballus)
title Cross-modal perception of human emotion in domestic horses (Equus caballus)
title_full Cross-modal perception of human emotion in domestic horses (Equus caballus)
title_fullStr Cross-modal perception of human emotion in domestic horses (Equus caballus)
title_full_unstemmed Cross-modal perception of human emotion in domestic horses (Equus caballus)
title_short Cross-modal perception of human emotion in domestic horses (Equus caballus)
title_sort cross-modal perception of human emotion in domestic horses (equus caballus)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6013457/
https://www.ncbi.nlm.nih.gov/pubmed/29930289
http://dx.doi.org/10.1038/s41598-018-26892-6
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