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October 7, 2020 03:30 am

Dogs' Brains 'Not Hardwired' To Respond To Human Faces

An anonymous reader quotes a report from The Guardian: For despite having evolved facial expressions that tug on the heartstrings of owners, researchers have found that unlike humans, dogs do not have brain regions that respond specifically to faces. "It's amazing dogs do so well when it comes to reading emotions and identify from faces, despite the fact that they seem not to have a brain designed for having a focus on [them]," said Dr Attila Andics, co-author of the study from Eotvos Lorand University, Hungary. Writing in the Journal of Neuroscience, Andics and colleagues report how they scanned the brains of 20 family dogs, including labradors and border collies, and 30 humans with each shown six sequences of 48 videos of either the front or the back of a human or dog head. The team found particular regions of the dog's brain showed differing activity depending on the species shown, with a greater response to dog videos. However, there was no difference in any region when dogs were shown a human or dog face compared with the back of its head. By contrast, regions of the human brain showed different activity depending whether a face or the back of a head was shown, with faces generally generating a stronger response. A small subset of these regions also showed a difference between species, in general showing a stronger response to humans. Andics said the further analysis showed the dog brain was primarily focused on whether the animal was looking at a dog or a human, whereas the human brain was mainly focused on whether there was a face.

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