Three scientists have been awarded the Nobel Prize in medicine for their work on a tool that helps understand brain function. Their research combined genes and light to control neurons in living brains. This technique has led to a greater understanding of neural pathways and their role in behavior and disease.

The scientists' work has opened up new possibilities for treatments, including potentially restoring vision in people with certain types of blindness.

Further details on the award and the scientists' research are available, including the potential impact of their discoveries on the field of medicine.