Methods of treating the brain and nervous system using light therapy

Abstract

Light energy is applied externally to a patient's head, neck, or both, to treat the brain and nervous system. The light energy stimulates different neurological pathways, reduces inflammation, stimulates mitochondria function in the brain, and increases HRV. The light is applied to the patient on the skull, near the vagus nerve, or a combination thereof. The treatment can be enhanced by activating the cranial nerves while the light is applied. The wavelengths of the applied light range from ultraviolet to far infrared, and preferably are visible light from about 400-760 nm. In a preferred embodiment the applied light is in the red range and more preferably about of 635 nm±10 nm. The applied light energy is applied with a pulse frequency or frequencies that mimic healthy brain function of alpha, beta, delta, and theta waves such as 8 Hz, 53 Hz, 73 Hz and 101 Hz. The pulse frequencies can be applied singularly, serially, alternately, or simultaneously. This low-level light therapy has an energy dose rate that causes no detectable temperature rise of the treated tissue immediately upon treatment or over time, and no macroscopically visible changes in tissue structure. Advantageously, there is no device or structure between where the laser light exits the laser device and the patient's tissue, The light can be emitted from the same light emitter or from multiple emitters. Preferably the light is laser light and is emitted as a line from a hand-held laser device, and the line is waved manually across a treatment area in a continuous, sweeping manner.