Analyze Diet

Topic:Emotions

The study of emotions in horses involves understanding the behavioral, physiological, and psychological responses of horses to various stimuli. Emotions in horses can be inferred through observable behaviors, such as vocalizations, body language, and interactions with their environment and other animals. Physiological indicators, including heart rate, cortisol levels, and other stress-related biomarkers, are also used to assess emotional states. This research area explores how emotions affect horse welfare, training outcomes, and human-animal interactions. This page compiles peer-reviewed research studies and scholarly articles that examine the identification, measurement, and implications of emotional states in horses.
Facial expression and oxytocin as possible markers of positive emotions in horses.
Scientific reports    October 2, 2018   Volume 8, Issue 1 14680 doi: 10.1038/s41598-018-32993-z
Lansade L, Nowak R, Lainé AL, Leterrier C, Bonneau C, Parias C, Bertin A.Behavioural and physiological markers of discrete positive emotions remain little investigated in animals. To characterise new markers in horses, we used tactile stimulations to induce emotional situation of contrasting valence. In the Gentle grooming group (G, N = 13) horses were gently groomed during 11 sessions on the body areas they appreciated the most. Horses in the Standard grooming group (S, N = 14) were groomed using a fixed procedure, reported to induce avoidance reactions in some horses. At session 11, G horses expressed significantly more contact-seeking behaviours than S h...
A qualitative exploration of post-acute stroke participants’ experiences of a multimodal intervention incorporating horseback riding.
PloS one    September 20, 2018   Volume 13, Issue 9 e0203933 doi: 10.1371/journal.pone.0203933
Pohl P, Carlsson G, Bunketorp Käll L, Nilsson M, Blomstrand C.Multimodal rehabilitation interventions delivered in late phase of stroke recovery involve physical (motor and sensory), social, and cognitively challenging activities. Horseback riding can be incorporated within such interventions, leading to meaningful long-term improvements when applied to individuals with moderate levels of disability. There is a lack of research illuminating stroke survivors' experiences and perceptions of horseback riding in the context of multimodal interventions. To explore stroke survivors' experiences of participation in a multimodal group-based intervention that inc...
Companion animals and human health: benefits, challenges, and the road ahead for human-animal interaction.
Revue scientifique et technique (International Office of Epizootics)    September 14, 2018   Volume 37, Issue 1 71-82 doi: 10.20506/rst.37.1.2741
Friedman E, Krause-Parello CA.There is ample evidence that human-animal interaction (HAI) is associated with health. Studies encompass three general categories: those that compare companion animal owners with individuals who do not own companion animals, those examining brief, 'one-off' contacts with animals, and those that review animal-assisted interventions. The health benefits demonstrated typically include reductions in depression and loneliness, while enhancing social interaction or social skills, and decreasing anxiety and arousal. Other health benefits associated with companion animals include the promotion of exer...
Snort acoustic structure codes for positive emotions in horses.
Die Naturwissenschaften    September 12, 2018   Volume 105, Issue 9-10 57 doi: 10.1007/s00114-018-1582-9
Stomp M, Leroux M, Cellier M, Henry S, Hausberger M, Lemasson A.While the vocal coding of human and animal internal states has been widely studied, the possible acoustic expression of "positive" emotions remains poorly known. Recent studies suggest that snorts (non-vocal sounds produced by the air expiration through the nostrils) appear to be reliable indicators of positive internal states in several ungulate species. Here, we hypothesised in horses that the acoustic structure of the snort could vary with the subjects' current emotional state. Indeed, a preliminary sound analysis of snorts let us suggest structure variations related to the presence of puls...
Domestic horses (Equus caballus) discriminate between negative and positive human nonverbal vocalisations.
Scientific reports    August 29, 2018   Volume 8, Issue 1 13052 doi: 10.1038/s41598-018-30777-z
Smith AV, Proops L, Grounds K, Wathan J, Scott SK, McComb K.The ability to discriminate between emotion in vocal signals is highly adaptive in social species. It may also be adaptive for domestic species to distinguish such signals in humans. Here we present a playback study investigating whether horses spontaneously respond in a functionally relevant way towards positive and negative emotion in human nonverbal vocalisations. We presented horses with positively- and negatively-valenced human vocalisations (laughter and growling, respectively) in the absence of all other emotional cues. Horses were found to adopt a freeze posture for significantly longe...
Emotional excitability and behaviour of horses in response to stroking various regions of the body.
Animal science journal = Nihon chikusan Gakkaiho    August 28, 2018   Volume 89, Issue 11 1599-1608 doi: 10.1111/asj.13104
Janczarek I, Stachurska A, Wilk I, Krakowski L, Przetacznik M, Zastrzeżyńska M, Kuna-Broniowska I.Touching the skin by gentle stroking is frequently used to reward horses. The objective of the study was to examine emotional excitability and behaviour of horses in response to stroking different regions of their bodies. The study included 15 adult warmbloods and 15 adult ponies, nine geldings and six mares within each type of horse. First, a novel-object test was conducted. For five successive days, one of five regions of the horse's body was stroked on each side for 5 min. Heart rate and heart rate variability were monitored at rest, during the test and stroking. Simultaneously, horse beha...
Could the Visual Differential Attention Be a Referential Gesture? A Study on Horses (Equus caballus) on the Impossible Task Paradigm.
Animals : an open access journal from MDPI    July 17, 2018   Volume 8, Issue 7 120 doi: 10.3390/ani8070120
Alterisio A, Baragli P, Aria M, D'Aniello B, Scandurra A.In order to explore the decision-making processes of horses, we designed an impossible task paradigm aimed at causing an expectancy violation in horses. Our goals were to verify whether this paradigm is effective in horses by analyzing their motivation in trying to solve the task and the mode of the potential helping request in such a context. In the first experiment, 30 horses were subjected to three consecutive conditions: no food condition where two persons were positioned at either side of a table in front of the stall, solvable condition when a researcher placed a reachable reward on the ...
An unexpected acoustic indicator of positive emotions in horses.
PloS one    July 11, 2018   Volume 13, Issue 7 e0197898 doi: 10.1371/journal.pone.0197898
Stomp M, Leroux M, Cellier M, Henry S, Lemasson A, Hausberger M.Indicators of positive emotions are still scarce and many proposed behavioural markers have proven ambiguous. Studies established a link between acoustic signals and emitter's internal state, but few related to positive emotions and still fewer considered non-vocal sounds. One of them, the snort, is shared by several perrisodactyls and has been associated to positive contexts in these species. We hypothesized that this could be also the case in horses. In this species, there is a clear need for a thorough description of non-vocal acoustic signals (snorts, snores or blows are often used interch...
Attentional state and brain processes: state-dependent lateralization of EEG profiles in horses.
Scientific reports    July 5, 2018   Volume 8, Issue 1 10153 doi: 10.1038/s41598-018-28334-9
Rochais C, Sébilleau M, Menoret M, Oger M, Henry S, Hausberger M, Cousillas H.Lateralization of brain functions has been suggested to provide individuals with advantages, such as an increase of neural efficiency. The right hemisphere is likely to be specialized for processing attention for details and the left hemisphere for categorization of stimuli. Thus attentional processes actually may underlie lateralization. In the present study, we hypothesized that the attentional state of horses could be reflected in the lateralization of brain responses. We used i) a recently developed attention test to measure horses' visual attentional responses towards a standardized stimu...
Cross-modal perception of human emotion in domestic horses (Equus caballus).
Scientific reports    June 21, 2018   Volume 8, Issue 1 8660 doi: 10.1038/s41598-018-26892-6
Nakamura K, Takimoto-Inose A, Hasegawa T.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 ...
Influence of an Equine-Assisted Activities Program on Dementia-Specific Quality of Life.
American journal of Alzheimer's disease and other dementias    May 9, 2018   Volume 33, Issue 5 309-317 doi: 10.1177/1533317518772052
Fields B, Bruemmer J, Gloeckner G, Wood W.Institutional facilities face challenges providing experiences to residents with dementia that promote participation in meaningful activities. Guided by the Lived Environment Life Quality Model, this study investigated associations between 9 different activity situations-one an equine-assisted activities program (EAAP)-and positive, negative, and neutral behavioral indicators of quality of life (QoL) in 6 residents with dementia who expressed an interest in horses. Direct observational data were collected for 4 hours twice weekly over 8 weeks. Using χ tests, differences across activity situat...
Effects of Equine-Assisted Activities and Therapies on the Affective Network of Adolescents with Internet Gaming Disorder.
Journal of alternative and complementary medicine (New York, N.Y.)    April 26, 2018   Volume 24, Issue 8 841-849 doi: 10.1089/acm.2017.0416
Kang KD, Jung TW, Park IH, Han DH.Internet gaming disorder (IGD) has been suggested to be a mental health disorder. Attachment and emotional status in IGD patients are important for understanding the etiology and progression of IGD because both parameters are considered to be associated with the affective network. Equine-assisted activities and therapies (EAAT) have been reported to improve emotional status and attachment in subjects. We hypothesized that EAAT would improve attachment in IGD adolescents with insecure attachment issues and increase functional connectivity (FC) within the affective network. Methods: Subjects com...
A cross-species judgement bias task: integrating active trial initiation into a spatial Go/No-go task.
Scientific reports    March 23, 2018   Volume 8, Issue 1 5104 doi: 10.1038/s41598-018-23459-3
Hintze S, Melotti L, Colosio S, Bailoo JD, Boada-Saña M, Würbel H, Murphy E.Judgement bias tasks are promising tools to assess emotional valence in animals, however current designs are often time-consuming and lack aspects of validity. This study aimed to establish an improved design that addresses these issues and can be used across species. Horses, rats, and mice were trained on a spatial Go/No-go task where animals could initiate each trial. The location of an open goal-box, at either end of a row of five goal-boxes, signalled either reward (positive trial) or non-reward (negative trial). Animals first learned to approach the goal-box in positive trials (Go) and to...
Emotional state and personality influence cognitive flexibility in horses (Equus caballus).
Journal of comparative psychology (Washington, D.C. : 1983)    March 8, 2018   Volume 132, Issue 2 130-140 doi: 10.1037/com0000091
Fortin M, Valenchon M, Lévy F, Calandreau L, Arnould C, Lansade L.Emotions are recognized as strong modulators of cognitive capacities. However, studies have mainly focused on the effect of negative emotions, with few investigating positive emotions. Recent studies suggest that traits of personality can modulate the effects of emotion on cognitive performance. This study aimed to assess whether emotional states differing according to their valence influenced the ability to achieve instrumental conditioning and learning flexibility and to determine the influence of personality. After being tested for their personality, 55 mares underwent acquisition and extin...
Effects of therapeutic horseback riding on post-traumatic stress disorder in military veterans.
Military Medical Research    January 19, 2018   Volume 5, Issue 1 3 doi: 10.1186/s40779-018-0149-6
Johnson RA, Albright DL, Marzolf JR, Bibbo JL, Yaglom HD, Crowder SM, Carlisle GK, Willard A, Russell CL, Grindler K, Osterlind S, Wassman M, Harms N.Large numbers of post-deployment U.S. veterans are diagnosed with post-traumatic stress disorder (PTSD) and/or traumatic brain injury (TBI), leading to an urgent need for effective interventions to reduce symptoms and increase veterans' coping. PTSD includes anxiety, flashbacks, and emotional numbing. The symptoms increase health care costs for stress-related illnesses and can make veterans' civilian life difficult. We used a randomized wait-list controlled design with repeated measures of U.S. military veterans to address our specific aim to test the efficacy of a 6-week therapeutic horseback...
Parent Perceptions of Psychosocial Outcomes of Equine-Assisted Interventions for Children with Autism Spectrum Disorder.
Journal of autism and developmental disorders    December 3, 2017   Volume 48, Issue 3 759-769 doi: 10.1007/s10803-017-3399-3
Tan VX, Simmonds JG.This research explored parents' perceptions of the psychosocial outcomes of their children's experience of receiving equine-assisted interventions (EAI). Participants were the parents of six children (aged 3-14) diagnosed with autism spectrum disorder. Five semi-structured interviews were conducted and the transcript data was analysed using Interpretative phenomenological analysis. Four super-ordinate themes emerged from the analysis: (1) child's improved self-concept and enhanced emotional well-being, (2) child's improved self-regulatory ability, (3) social benefits for the child, and (4) une...
Equine Assisted Interventions (EAIs): Methodological Considerations for Stress Assessment in Horses.
Veterinary sciences    September 8, 2017   Volume 4, Issue 3 44 doi: 10.3390/vetsci4030044
De Santis M, Contalbrigo L, Borgi M, Cirulli F, Luzi F, Redaelli V, Stefani A, Toson M, Odore R, Vercelli C, Valle E, Farina L.Equine assisted interventions (EAIs) are recently facing an increasing popularity, and are characterized by a wide diversity of practices. However, information on the welfare of animals involved in this kind of activity is often lacking. Horses are highly susceptible to work stressors related to physical constraints and/or to the need to control emotions while interacting with humans. Considerations of the emotional state of horses involved in EAIs have multiple valences: for the safety of humans and animals involved, for the quality and efficacy of interventions, as well as for ethical reason...
Vocal expression of emotional valence in Przewalski’s horses (Equus przewalskii).
Scientific reports    August 18, 2017   Volume 7, Issue 1 8779 doi: 10.1038/s41598-017-09437-1
Maigrot AL, Hillmann E, Anne C, Briefer EF.Vocal expression of emotions has been suggested to be conserved throughout evolution. However, since vocal indicators of emotions have never been compared between closely related species using similar methods, it remains unclear whether this is the case. Here, we investigated vocal indicators of emotional valence (negative versus positive) in Przewalski's horses, in order to find out if expression of valence is similar between species and notably among Equidae through a comparison with previous results obtained in domestic horse whinnies. We observed Przewalski's horses in naturally occurring ...
‘It just opens up their world’: autism, empathy, and the therapeutic effects of equine interactions.
Anthropology & medicine    May 17, 2017   Volume 25, Issue 2 220-234 doi: 10.1080/13648470.2017.1291115
Malcolm R, Ecks S, Pickersgill M.Experiences of autism-spectrum disorder are now increasingly studied by social scientists. Human-animal relations have also become a major focus of social inquiry in recent years. Examining horse-assisted therapy for autistic spectrum disorders, this is the first paper that brings these fields together. Drawing on participant observation and interviews at a UK horse therapy Centre, this article examines how staff and the parents of riders account for the successes and limitations of equine therapy. To the respondents, horses 'open up' autistic children and make possible interactions that seeme...
Are horses capable of mirror self-recognition? A pilot study.
PloS one    May 16, 2017   Volume 12, Issue 5 e0176717 doi: 10.1371/journal.pone.0176717
Baragli P, Demuru E, Scopa C, Palagi E.Mirror Self-Recognition (MSR) unveils complex cognitive, social and emotional skills and it has been found only in humans and few other species, such as great apes, dolphins, elephants and magpies. In this pilot study, we tested if horses show the capacity of MSR. Four subjects living socially under naturalistic conditions were selected for the experiment. We adopted the classical mark test, which consists in placing a coloured mark on an out-of-view body part, visible only through mirror inspection. If the animal considers the image as its own, it will use its reflection to detect the mark an...
Perception of emotional valence in horse whinnies.
Frontiers in zoology    February 11, 2017   Volume 14 8 doi: 10.1186/s12983-017-0193-1
Briefer EF, Mandel R, Maigrot AL, Briefer Freymond S, Bachmann I, Hillmann E.Non-human animals often produce different types of vocalisations in negative and positive contexts (i.e. different valence), similar to humans, in which crying is associated with negative emotions and laughter is associated with positive ones. However, some types of vocalisations (e.g. contact calls, human speech) can be produced in both negative and positive contexts, and changes in valence are only accompanied by slight structural differences. Although such acoustically graded signals associated with opposite valence have been highlighted in some species, it is not known if conspecifics disc...
Personality and predisposition to form habit behaviours during instrumental conditioning in horses (Equus caballus).
PloS one    February 3, 2017   Volume 12, Issue 2 e0171010 doi: 10.1371/journal.pone.0171010
Lansade L, Marchand AR, Coutureau E, Ballé C, Polli F, Calandreau L.The relationship between personality and learning abilities has become a growing field of interest. Studies have mainly focused on the relationship with performance, such as the speed of acquisition. In this study, we hypothesised that personality could in part also be related to a certain predisposition of an individual to switch more easily from a goal-directed process to a habit process during learning. To identify these processes, we conducted a contingency degradation protocol. This study investigated 1/ whether in general horses are able to adjust their response according to the continge...
An open trial of equine-assisted therapy for children exposed to problematic parental substance use.
Health & social care in the community    February 1, 2017   Volume 25, Issue 3 1247-1256 doi: 10.1111/hsc.12427
Tsantefski M, Briggs L, Griffiths J, Tidyman A.Children exposed to problematic parental substance use (PPSU) often face a number of deleterious developmental outcomes, yet these children are less likely to become known to child protection and welfare services. Although there is a growing evidence base for equine-assisted therapy (EAT) as an effective treatment modality for atypically developing children and adolescents, scant research has explored the benefit of EAT for children exposed to PPSU. The current study is the first to explore the benefit of EAT for children exposed to PPSU in Victoria, Australia. Five 12-week EAT programmes were...
Toward a Choice-Based Judgment Bias Task for Horses.
Journal of applied animal welfare science : JAAWS    January 31, 2017   Volume 20, Issue 2 123-136 doi: 10.1080/10888705.2016.1276834
Hintze S, Roth E, Bachmann I, Würbel H.Judgment bias tasks for nonhuman animals are promising tools to assess emotional valence as a measure of animal welfare. In view of establishing a valid judgment bias task for horses, the present study aimed to evaluate 2 versions (go/no-go and active choice) of an auditory judgment bias task for horses in terms of acquisition learning and discrimination of ambiguous cues. Five mares and 5 stallions were randomly assigned to the 2 designs and trained for 10 trials per day to acquire different operant responses to a low-frequency tone and a high-frequency tone, respectively. Following acquisiti...
Horses discriminate between facial expressions of conspecifics.
Scientific reports    December 20, 2016   Volume 6 38322 doi: 10.1038/srep38322
Wathan J, Proops L, Grounds K, McComb K.In humans, facial expressions are rich sources of social information and have an important role in regulating social interactions. However, the extent to which this is true in non-human animals, and particularly in non-primates, remains largely unknown. Therefore we tested whether domestic horses (Equus caballus) could discriminate between facial expressions of their conspecifics captured in different contexts, and whether viewing these expressions elicited functionally relevant reactions. Horses were more likely to approach photographic stimuli displaying facial expressions associated with po...
Triads in Equine-Assisted Social Work Enhance Therapeutic Relationships with Self-Harming Adolescents.
Clinical social work journal    November 16, 2016   Volume 45, Issue 4 320-331 doi: 10.1007/s10615-016-0613-2
Carlsson C.Despite an increasing number of studies, there is still a lack of knowledge about the unique features that underlie the process in equine assisted social work (EASW). This study aimed to reveal, through qualitative methods, the dyads within the triad that become stronger during the process of EASW, as well as the effect of the participation of the horse on the relationship between the counselor and client. Data were collected through in-depth interviews with nine female self-harming clients aged 15-21 years and eight staff members. The interviews, together with video-recorded human-horse inte...
Are Eyes a Mirror of the Soul? What Eye Wrinkles Reveal about a Horse’s Emotional State.
PloS one    October 12, 2016   Volume 11, Issue 10 e0164017 doi: 10.1371/journal.pone.0164017
Hintze S, Smith S, Patt A, Bachmann I, Würbel H.Finding valid indicators of emotional states is one of the biggest challenges in animal welfare science. Here, we investigated in horses whether variation in the expression of eye wrinkles caused by contraction of the inner eyebrow raiser reflects emotional valence. By confronting horses with positive and negative conditions, we aimed to induce positive and negative emotional states, hypothesising that positive emotions would reduce whereas negative emotions would increase eye wrinkle expression. Sixteen horses were individually exposed in a balanced order to two positive (grooming, food antic...
Horses give functionally relevant responses to human facial expressions of emotion: a response to Schmoll (2016).
Biology letters    September 15, 2016   Volume 12, Issue 9 20160549 doi: 10.1098/rsbl.2016.0549
Smith AV, Proops L, Grounds K, Wathan J, McComb K.No abstract available
The effect of relaxing massage on heart rate and heart rate variability in purebred Arabian racehorses.
Animal science journal = Nihon chikusan Gakkaiho    September 4, 2016   Volume 88, Issue 4 669-677 doi: 10.1111/asj.12671
Kowalik S, Janczarek I, Kędzierski W, Stachurska A, Wilk I.The objective of this study was to assess the effect of relaxing massage on the heart rate (HR) and heart rate variability (HRV) in young racehorses during their first racing season. In the study, 72 Purebred Arabian racehorses were included. The study was implemented during the full race season. The horses from control and experimental groups were included in regular race training 6 days a week. The horses from the experimental group were additionally subject to the relaxing massage 3 days a week during the whole study. HR and HRV were assumed as indicators of the emotional state of the horse...
ANIMAL BEHAVIOR AND WELL-BEING SYMPOSIUM: Interaction between coping style/personality, stress, and welfare: Relevance for domestic farm animals.
Journal of animal science    June 11, 2016   Volume 94, Issue 6 2284-2296 doi: 10.2527/jas.2015-0125
Koolhaas JM, Van Reenen CG.This paper will argue that understanding animal welfare and the individual vulnerability to stress-related disease requires a fundamental understanding of functional individual variation as it occurs in nature as well as the underlying neurobiology and neuroendocrinology. Ecological studies in feral populations of mice, fish, and birds start to recognize the functional significance of phenotypes that individually differ in their behavioral and neuroendocrine response to environmental challenge. Recent studies indicate that the individual variation within a species may buffer the species for st...