Nobel Prize in Physiology or Medicine 2026 awarded for optogenetics discoveries

The 2026 Nobel Prize in Physiology or Medicine has been awarded to Karl Deisseroth, Peter Hegemann, and Georg Nagel for their pioneering discoveries of light-gated ion channels and the development of optogenetics, the Nobel Assembly announced via Nobelprize.org.

Karl Deisseroth, an American neuroscientist and psychiatrist at Stanford University, played a pivotal role in formulating optogenetic technologies that allow precise optical control of individual brain circuits, significantly advancing research into psychiatric and neurological conditions including depression and autism.

German biophysicists Peter Hegemann of Humboldt University of Berlin and Georg Nagel of the University of Würzburg jointly characterized the functional biophysics of channelrhodopsins, demonstrating that these light-sensitive microbial proteins operate directly as light-gated ion channels. Their foundational work provided the molecular toolkit that enabled researchers to actuate neuronal firing with millisecond precision using light, transforming modern neuroscience.