Researchers have found that they can stimulate neurons using infrared light. Infrared light may become useful for a variety of central nervous system disorders in the future. It could be used for brain stem stroke treatment and other brain ailments. Infrared light has a relatively high targeting accuracy. It is able to stimulate very small subpopulations of neurons. This selectively would allow a much more refined treatment of many different things. Infrared brain stimulation may allow for more precise mapping of the brain’s cortex. Infrared light may even be used for deep brain stimulation implants. Currently deep brain stimulation implants use electricity, but infrared light would allow a novel mechanism of shaping the brain.

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