Humans Possess A Thalamus, Too

“… and many neuronal processes have been conserved during evolution. We also have brain regions that are active when we perceive facial movements or body motion, but the significance of these regions for social behavior has not been explored”, continues Kappel.

The study by Kappel, Larsch, Baker and their collaborators has shed light on a part of the brain whose activation provides the elementary “glue” for the bonding of two zebrafish. Collectively, such small-scale interactions create shoals of fish. Social behavior is driven by networks of brains, which are themselves networks of neurons.