You searched for: “optogenetics
The science of isolating and communicating with specific types of neurons using light with a combination of optics and genetics that may allow neuroscientists to identify and to control brain circuits with greater precision.

Because of specialized hardware applications which need to be developed, it may be many years before optogenetics can offer a reliable diagnosis, much less any definitive cure for Parkinson’s disease or any other major brain illness or disorder.

—Compiled from information presented by
"A Light in the Brain" by Gary Stix in Scientific American;
January, 2010; pages 10 & 11.
"A healthy future for optogenetics" by Jeff Bairstow;
in the Laser Focus World; August 1, 2009.