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Dogs help people relieve stress

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Researchers at the University of South Korea have studied the benefits people have from interacting with dogs. Although is this not new information, they researched further to see if different activities produced a different reaction in people. They had people play, walk, groom and massage dogs while studying their brainwaves. They found that the people who walked or played with dogs had an increase in relaxed wakefulness. The participants who groomed, played and massaged a dog had a heightened level of concentration. They also observed that the subjects felt a significant drop in the feeling of fatigue, depression and stress after interacting with dogs.

Sue’s Note: I would think that the same results would be found when people interact with other animals that they enjoy. This study supports the use of therapy animals in all situations.

Journal Reference:

  1. Onyoo Yoo, YuTong Wu, Jin Soo Han, Sin-Ae Park. Psychophysiological and emotional effects of human–Dog interactions by activity type: An electroencephalogram study. PLOS ONE, 2024; 19 (3): e0298384 DOI: 10.1371/journal.pone.0298384

Cite This Page:

PLOS. “Interactions with dogs can increase brainwaves associated with stress relief and heightened concentration.” ScienceDaily. ScienceDaily, 13 March 2024. <www.sciencedaily.com/releases/2024/03/240313185025.htm>.

Brain connectivity in animals and people

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In a first of its kind study, researchers at the American Friends of Tel Aviv University studied the MRIs of 130 mammals of different species to determine if there is a difference between brain size and its ability to transfer information through the neural network. This information was compared with the MRI of 32 human brains. The size of the mammals ranged from tiny bats to large mammals. The report stated that no animal was killed for the study.

Professor Assaf explained that many scientists assumed that human brains were superior due to greater brain connectivity, explaining a human’s greater abilities. However, no difference was found between species. However, there were differences between individual animals of the same species.

Brain connectivity involves the transfer of information from one part of the brain to another. The researchers found that different brains use different strategies to preserve an equal measure of overall connectivity.

“Our study revealed a universal law: Conservation of Brain Connectivity,” Prof. Assaf concludes. “This law denotes that the efficiency of information transfer in the brain’s neural network is equal in all mammals, including humans. We also discovered a compensation mechanism which balances the connectivity in every mammalian brain. This mechanism ensures that high connectivity in a specific area of the brain, possibly manifested through some special talent (e.g. sports or music) is always countered by relatively low connectivity in another part of the brain. In future projects we will investigate how the brain compensates for the enhanced connectivity associated with specific capabilities and learning processes.”

This study was conducted by researchers at Tel Aviv University, led by Prof. Yaniv Assaf of the School of Neurobiology, Biochemistry and Biophysics and the Sagol School of Neuroscience and Prof. Yossi Yovel of the School of Zoology, the Sagol School of Neuroscience, and the Steinhardt Museum of Natural History.

Journal Reference:

  1. Yaniv Assaf, Arieli Bouznach, Omri Zomet, Assaf Marom, Yossi Yovel. Conservation of brain connectivity and wiring across the mammalian class. Nature Neuroscience, 2020; 23 (7): 805 DOI: 10.1038/s41593-020-0641-7

Cite This Page:

American Friends of Tel Aviv University. “MRI scans of the brains of 130 mammals, including humans, indicate equal connectivity.” ScienceDaily. ScienceDaily, 20 July 2020. <www.sciencedaily.com/releases/2020/07/200720112216.htm>.