A groundbreaking study has revealed that the brain waves of humans and dogs synchronize during social interactions, deepening our understanding of the strong bond shared between these two species. This phenomenon, known as interbrain coupling, reflects a level of connection previously thought to exist only among humans. Published in Advanced Science, the findings shed light on the scientific basis for the unique companionship between humans and their canine friends.
A History of Companionship
Dogs have been integral to human life for millennia, evolving alongside us to understand and respond to our emotions and signals. Researcher Yong Zhang emphasizes that domesticated dogs offer an extraordinary level of active companionship, unparalleled by most other animals. This evolutionary history inspired researchers to investigate whether the camaraderie between humans and dogs could also be reflected in brain activity during interactions.
Social Interaction and Brain Synchrony
Using EEG technology, the study measured brain activity between humans and dogs during mutual gazing and petting sessions over five days. Results showed that interbrain coupling strengthened as the bond deepened. Interestingly, this synchronization peaked when humans initiated both petting and mutual gazing, highlighting the role of social hierarchy in these interactions. The findings echo patterns seen in human relationships, suggesting quality interactions enhance neural alignment.
Dogs as Models for Autism Research
The study extended its scope by exploring interbrain coupling in dogs genetically modified to exhibit traits of autism spectrum disorder (ASD). Results revealed that these dogs had weaker interbrain coupling with humans, but administration of the psychedelic drug LSD temporarily improved this connection. Researchers suggest that dogs, given their social closeness to humans, could serve as valuable models for autism studies, potentially leading to new therapeutic interventions using non-hallucinogenic drug analogs.
Future Implications and Limitations
Despite the promising findings, the study had limitations, including a small sample size and controlled laboratory settings. Researchers aim to refine their approach, exploring more natural environments and the mechanisms by which LSD enhances interbrain coupling. As societal attitudes toward psychedelics evolve, these findings could pave the way for innovative treatments for autism and other social disorders, expanding the therapeutic potential of the human–dog bond.
Sources:
Advanced Science News – https://www.advancedsciencenews.com/new-study-reveals-aligned-brain-waves-strengthen-the-bond-between-humans-and-dogs/
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