Deisseroth, Hegemann, and Nagel Win 2026 Medicine Nobel

The 2026 Nobel Prize in Physiology or Medicine has been awarded to Karl Deisseroth, Peter Hegemann, and Georg Nagel for their significant contributions to the field of neuroscience through their discoveries related to light-gated ion channels and the development of optogenetics. The Nobel Assembly at Karolinska Institutet announced the laureates on October 5, 2026.

Hegemann and Nagel were recognized for their discovery of channelrhodopsin, a light-sensitive protein found in single-celled algae. Karl Deisseroth later transformed this discovery into a method that allows scientists to use light to control the activity of individual nerve cells in the living brain.

This innovative technique has greatly advanced research into how neural circuits affect memories, emotions, and behaviors, becoming a widely utilized tool in neuroscience research.