Can Light Penetrate the Skull?
Can light penetrate the human skull and reach the brain? This question often arises among both skeptics and scientists. The answer is yes but with caveats; this requires an appropriate wavelength (nm) and sufficient irradiance (mW/cm²) In this demonstration with a real human skull, the Vielight Neuro, emitting 810 nm near-infrared light at an [...]
