Key points from article :
Scientists find a way to manipulate the electrical properties of a target nerve cell.
Genetically modified specific nerve cell types to produce an enzyme on their surface.
Injected a monomer which the enzymes on the modified cells linked to form a polymer on the nerve.
The polymer can be either an electrical conductor or insulator depending on the monomer used.
Potential to develop treatment for epilepsy and to connect prosthetic limbs to nerves in the future.
Needs more research to understand why the modifications give rise to these effects.
Research by Stanford University in California, published in the journal Science.