Scientists awarded 2026 Nobel Prize for pioneering optogenetics light-switch technique

The 2026 Nobel Prize in Physiology or Medicine was awarded to Karl Deisseroth, Peter Hegemann and Georg Nagel for their work on optogenetics, a technique that uses light to control neurons.

The method relies on light-gated ion channels, specifically channelrhodopsin, which was identified through studies of the algae Chlamydomonas. Hegemann discovered the gene for a light-sensitive protein, and together with Nagel they characterized the channel that opens in response to specific wavelengths.

Optogenetics has become a widely adopted tool for investigating brain function and behavior, enabling precise activation or inhibition of targeted neuronal populations in research settings.

The Nobel Committee highlighted the impact of these discoveries on neuroscience and potential therapeutic approaches, underscoring the technique's relevance to future drug development.