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Tytuł pozycji:

Negative mood affects the expression of negative but not positive emotions in mice.

Tytuł :
Negative mood affects the expression of negative but not positive emotions in mice.
Autorzy :
Clarkson JM; Centre for Behaviour and Evolution, Biosciences Institute, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
Leach MC; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
Flecknell PA; Comparative Biology Centre, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
Rowe C; Centre for Behaviour and Evolution, Biosciences Institute, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
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Źródło :
Proceedings. Biological sciences [Proc Biol Sci] 2020 Aug 26; Vol. 287 (1933), pp. 20201636. Date of Electronic Publication: 2020 Aug 26.
Typ publikacji :
Journal Article; Research Support, Non-U.S. Gov't
Język :
English
Imprint Name(s) :
Original Publication: London : Royal Society of London, c1990-
MeSH Terms :
Affect*
Behavior, Animal*
Mice/*physiology
Animals ; Anxiety ; Emotions
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Grant Information :
BB/J014516/1 United Kingdom BB_ Biotechnology and Biological Sciences Research Council
Contributed Indexing :
Keywords: affective state*; animal emotion*; cumulative effects*; depression*; mice*; resilience*
Molecular Sequence :
Dryad 10.5061/dryad.x69p8czg4
figshare 10.6084/m9.figshare.c.5088395
Entry Date(s) :
Date Created: 20200827 Date Completed: 20200923 Latest Revision: 20200923
Update Code :
20201023
PubMed Central ID :
PMC7482280
DOI :
10.1098/rspb.2020.1636
PMID :
32842924
Czasopismo naukowe
Whether and to what extent animals experience emotions is crucial for understanding their decisions and behaviour, and underpins a range of scientific fields, including animal behaviour, neuroscience, evolutionary biology and animal welfare science. However, research has predominantly focused on alleviating negative emotions in animals, with the expression of positive emotions left largely unexplored. Therefore, little is known about positive emotions in animals and how their expression is mediated. We used tail handling to induce a negative mood in laboratory mice and found that while being more anxious and depressed increased their expression of a discrete negative emotion (disappointment), meaning that they were less resilient to negative events, their capacity to express a discrete positive emotion (elation) was unaffected relative to control mice. Therefore, we show not only that mice have discrete positive emotions, but that they do so regardless of their current mood state. Our findings are the first to suggest that the expression of discrete positive and negative emotions in animals is not equally affected by long-term mood state. Our results also demonstrate that repeated negative events can have a cumulative effect to reduce resilience in laboratory animals, which has significant implications for animal welfare.

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