ArticleScientific reports2019
Positive and negative contexts predict duration of pig vocalisations.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
What it found
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Who cites it
21 citing papers in PubMed.
- Resilience Metrics in Pigs: How Novelty and Environmental Complexity Shape Affective State and Neurobiological Outcomes.Animals : an open access journal from MDPI · 2026Article
- Advances in Audio Classification and Artificial Intelligence for Respiratory Health and Welfare Monitoring in Swine.Biology · 2026Review
- Humans correctly assign emotional valence of rat vocalizations.Frontiers in psychology · 2026Article
- Early-Life Socialization Enhances Social Competence and Alters Affiliative Preference in Piglets.Animals : an open access journal from MDPI · 2025Article
- Integrating multi-modal data fusion approaches for analysis of dairy cattle vocalizations.Frontiers in veterinary science · 2025Article
- California mice (Peromyscus californicus) adjust mouth movements for vocal production during early postnatal development.BMC biology · 2024Article
- Domestication and exposure to human social stimuli are not sufficient to trigger attachment to humans: a companion pig-dog comparative study.Scientific reports · 2024Article
- Detecting tail biters by monitoring pig screams in weaning pigs.Scientific reports · 2024Article
- Utilizing vocalizations to gain insight into the affective states of non-human mammals.Frontiers in veterinary science · 2024Review
- Looking beyond the Shoal: Fish Welfare as an Individual Attribute.Animals : an open access journal from MDPI · 2022Article
- Vocal expression of emotional arousal across two call types in young rhesus macaques.Animal behaviour · 2022Article
- Automated identification of chicken distress vocalizations using deep learning models.Journal of the Royal Society, Interface · 2022Article
- Affective State Recognition in Livestock-Artificial Intelligence Approaches.Animals : an open access journal from MDPI · 2022Review
- Classification of pig calls produced from birth to slaughter according to their emotional valence and context of production.Scientific reports · 2022Article
- Measuring Farm Animal Emotions-Sensor-Based Approaches.Sensors (Basel, Switzerland) · 2021Review
- The Use of Artificial Intelligence in Assessing Affective States in Livestock.Frontiers in veterinary science · 2021Review
- Article
- Human proximity seeking in family pigs and dogs.Scientific reports · 2020Article
- Piglets vocally express the anticipation of pseudo-social contexts in their grunts.Scientific reports · 2020Article
- Manipulable Object and Human Contact: Preference and Modulation of Emotional States in Weaned Pigs.Frontiers in veterinary science · 2020Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Emotions are mental states occurring in response to external and internal stimuli and thus form an integral part of an animal's behaviour. Emotions can be mapped in two dimensions based on their arousal and valence. Whilst good indicators of arousal exist, clear indicators of emotional valence, particularly positive valence, are still rare. However, positively valenced emotions may play a crucial role in social interactions in many species and thus, an understanding of how emotional valence is expressed is needed. Vocalisations are a potential indicator of emotional valence as they can reflect the internal state of the caller. We experimentally manipulated valence, using positive and negative cognitive bias trials, to quantify changes in pig vocalisations. We found that grunts were shorter in positive trials than in negative trials. Interestingly, we did not find differences in the other measured acoustic parameters between the positive and negative contexts as reported in previous studies. These differences in results suggest that acoustic parameters may differ in their sensitivity as indicators of emotial valence. However, it is important to understand how similar contexts are, in terms of their valence, to be able to fully understand how and when acoustic parameters reflect emotional states.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.