2012
DOI: 10.1371/journal.pone.0036076
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Reading Faces: Differential Lateral Gaze Bias in Processing Canine and Human Facial Expressions in Dogs and 4-Year-Old Children

Abstract: Sensitivity to the emotions of others provides clear biological advantages. However, in the case of heterospecific relationships, such as that existing between dogs and humans, there are additional challenges since some elements of the expression of emotions are species-specific. Given that faces provide important visual cues for communicating emotional state in both humans and dogs, and that processing of emotions is subject to brain lateralisation, we investigated lateral gaze bias in adult dogs when present… Show more

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Cited by 131 publications
(138 citation statements)
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“…Horses' right-hemispheric bias towards negative human facial expressions was expected on the basis of previous literature [7,8] and is also observed in dogs [5]. However, the lack of a lateralized response to positive expressions in our study is more difficult to interpret.…”
Section: Discussionsupporting
confidence: 55%
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“…Horses' right-hemispheric bias towards negative human facial expressions was expected on the basis of previous literature [7,8] and is also observed in dogs [5]. However, the lack of a lateralized response to positive expressions in our study is more difficult to interpret.…”
Section: Discussionsupporting
confidence: 55%
“…Correspondingly, left-hemispheric specialization for positive environmental stimuli has also been reported, but there is contradictory evidence on the lateralization of responses to positive social situations [7]. The lateralized perception of heterospecific facial cues to emotion has only been documented in dogs, where 'angry' human facial expressions are viewed with a left-gaze bias, though no gaze bias is seen towards happy facial expressions [5]. Additionally, heart rate (HR) measures have the potential to provide objective insights into an animal's perception of external stimuli.…”
Section: Introductionmentioning
confidence: 99%
“…A capacidade de perceber as emoções do outro pode ter as seguintes vantagens biológicas: evitar danos, acessar fontes de alimento e administrar relações sociais. De acordo com Racca et al (2012), apesar dos mecanismos de obtenção de informação emocional terem sido desenvolvidos numa esfera intraespecífica, um processamento acurado das expressões faciais de um indivíduo pode ser muito vantajoso em relacionamentos interespecíficos, como é o caso do cão doméstico e do ser humano.…”
Section: Reconhecimento De Emoçõesunclassified
“…Espécies com dois olhos na frente da cabeça usam a visão binocular contínua, em que cada campo visual é controlado por um hemisfério cerebral contralateral. A preferência por um campo visual pode ser observada através do comportamento de olhar e está associada com o engajamento do hemisfério oposto (Racca et al, 2012).…”
Section: Os Cães As Emoções E As Expressões Faciaisunclassified
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