Andrew Huberman· PhD
The sour receptor, why would we have a sour receptor? It's there and we know it's there to detect the presence of spoiled or fermented food. Fermented fruit can be poisonous. Right? Alcohols are poisonous in many forms to our system. And these sour receptorbearing neurons communicate to an area of the brain stem that evokes the pucker response, closing of the eyes and essentially shutting of the mouth and cringing away.