optogeneticadj.

2006 K. Deisseroth et al. in Jrnl. Neurosci. 26 10380/1 Optogenetic technology combines genetic targeting of specific neurons or proteins with optical technology for imaging or control of the targets within intact, living neural circuits.

2007 Wired Apr. 50/2 The rigid electrodes scientists use to probe the brain are clumsy tools; optogenetic techniques allow for targeting specific types of neurons.

2015 BBC Focus Dec. 24/2 The scientists inserted an ‘optogenetic switch’ into [a] group of nerve cells in the medulla, the part of the brain that regulates functions such as breathing, heart rate and blood pressure. They then shone lasers at targeted areas of the brain to activate and deactivate it.