Immune molecules may affect mood
“If you’re sick, there’s so many more things that are happening to your internal states, your mood, and your behavioral states, and that’s not simply you being fatigued physically. It has something to do with the brain,” she says. In the cortex, the researchers found certain receptors in a population of neurons that, when overactivated, can lead to autism-like symptoms such as reduced sociability in mice. But the researchers determined that the neurons become less excitable when a specific form