Three scientists have been awarded the Nobel Prize in medicine for their work on a tool using light. Their research focuses on understanding brain function. Karl Deisseroth, Peter Hegemann, and Georg Nagel are the recipients of this prestigious award.

Deisseroth is affiliated with Stanford University, where he conducts his research. The work of these scientists involves studying channels that respond to light and a field known as optogenetics.

Further information on their research and the Nobel Prize award is available from the source, KTVU FOX 2 News.