Angie Voyles Askham, Spectrum | Feb 17, 2022 | 4 min read
A study shows that a molecule produced by intestinal microbes can enter the brain and that its presence is also associated with altered brain connectivity.
A single amino acid substitution in a protein causes increased neuron production in the frontal lobes of humans compared to Neanderthals—a tiny difference that could have given our species a cognitive edge, researchers say.