The decision to eat may come down to these three neurons
Speaking, singing, coughing, laughing, yelling, yawning, chewing—we use our jaws for many purposes. Each action requires a complex coordination of muscles whose activity is managed by neurons in the brain.
But it turns out that the neural circuit behind the jaw movement most essential to survival—eating—is surprisingly simple, as researchers from Rockefeller University recently described in a new paper in Nature. Christin Kosse and other scientists from the Laboratory of Molecular Genetics, headed by Jeffrey M. Friedman, have identified a three-neuron circuit that connects a hunger-signaling hormone to the jaw movements of chewing. ...














