Brain cell types identified that may push males to fight and have sex

Two groups of nerve cells may serve as ''on-off switches'' for male mating and aggression, suggests a new study in rodents. These neurons appear to send signals between two parts of the brain - the back tip, or posterior, of the amygdala and the hypothalamus - that together regulate emotions including fear, anxiety, and aggression.

from Relationships News -- ScienceDaily https://www.sciencedaily.com/releases/2020/07/200727114647.htm