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Type of publication: Journal Article
Type of document: Full Paper

Year: 2020

Authors: Karl, S; Boch, M; Zamansky, A; van der Linden, D; Wagner, IC; Völter, CJ; Lamm, C; Huber, L

Title: Exploring the dog-human relationship by combining fMRI, eye-tracking and behavioural measures.

Source: Sci Rep. 2020; 10(1):22273

Authors Vetmeduni Vienna:

Huber Ludwig
Karl Sabrina
Völter Christoph

Vetmed Research Units
Messerli Research Institute, Comparative Cognition

Project(s): Convergent evolution of the social brain? A comparative dog-human fMRI approach

Behavioural studies revealed that the dog-human relationship resembles the human mother-child bond, but the underlying mechanisms remain unclear. Here, we report the results of a multi-method approach combining fMRI (N = 17), eye-tracking (N = 15), and behavioural preference tests (N = 24) to explore the engagement of an attachment-like system in dogs seeing human faces. We presented morph videos of the caregiver, a familiar person, and a stranger showing either happy or angry facial expressions. Regardless of emotion, viewing the caregiver activated brain regions associated with emotion and attachment processing in humans. In contrast, the stranger elicited activation mainly in brain regions related to visual and motor processing, and the familiar person relatively weak activations overall. While the majority of happy stimuli led to increased activation of the caudate nucleus associated with reward processing, angry stimuli led to activations in limbic regions. Both the eye-tracking and preference test data supported the superior role of the caregiver's face and were in line with the findings from the fMRI experiment. While preliminary, these findings indicate that cutting across different levels, from brain to behaviour, can provide novel and converging insights into the engagement of the putative attachment system when dogs interact with humans.

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