The Nobel Assembly of Sweden's Karolinska Institute said the trio of scientists had been selected for their "discoveries concerning light-gated ion channels and optogenetics." Karl Deisseroth, Peter Hegemann and Georg Nagel have won the 2026 Nobel Prize in Physiology or Medicine. Key points and original sources are listed below.

• The Nobel Assembly of Sweden's Karolinska Institute said the trio of scientists had been selected for their "discoveries concerning light-gated ion channels and optogenetics."S1

• Karl Deisseroth, Peter Hegemann and Georg Nagel have won the 2026 Nobel Prize in Physiology or Medicine. The prize rewards optogenetics, a method that switches nerve cells on and off with light. The Nobel Assembly at Karolinska Institutet in Stockholm announce...S2