A dimmer switch for reward: the vagus sets the gain

In a Trends in Neurosciences Article Wang, Liu, and Bai, simplify and summarize the extensive experiments of Onimus, Arrivet and Gangarossa . Here is a Claude Sonnet 4.6 reduction of Wang et al: The Vagus Nerve as a Dimmer Switch for Reward We tend to blame mood or willpower when a favorite treat loses its appeal. But a recent mouse study by Onimus and colleagues suggests the deciding factor may…