Human Neuroscience

Immune cells sculpt circuits in the brain

Immune cells play an unexpected role in fine-tuning the brain’s neural circuits, according to research published in September, 2020 in Neuron. The immune cells that reside there, known as microglia, not only protect the brain from infection and inflammation, they also help physically sculpt circuits in the developing brain. The new work demonstrates that microglia also direct neurons to modify their own connectivity in response to sensory cues.