Nature Neuroscience.The idea that brain connectivity — and, therefore, efficiency — is greater in the human brain has been around for a long time. “Many scientists have assumed that connectivity in the human brain is significantly higher compared to other animals, as a possible explanation for the superior functioning of the ‘human animal,'” explains the study’s first author, Prof.
Yaniv Assaf.To test this assumption, Prof. Assaf and his team used a type of brain scan called diffusion MRI to scan the brains of 123 different species of mammal, including humans.