Optical fiber technologies for in-vivo light delivery and optogenetics

In optogenetics, light-sensitive proteins are genetically targeted into specific classes of neurons in living animal models (typically mice), making possible to control their neural activity by means of visible light delivered into the brain tissue. In this paper, recent advances on techniques for in-vivo optical stimulation and inhibition of neuronal activity in optogenetic experiments are reported, with particular emphasis on new a new generation of fiber-optic technologies.