The present invention relates to a light stimulator for a brain. The stimulator comprises: a light emitting unit comprising at least one light emitting diode for irradiating near-infrared rays; a receiving unit for receiving near-infrared rays reflected or induced in the brain without being absorbed in the brain among the near-infrared rays irradiated to the brain by the light emitting unit; a light quantity calculating unit for amplifying a near-infrared ray signal received by the light receiving unit and converting the amplified near-infrared ray signal into light quantity information of a digital signal; a communication unit for performing data communication with an external device; and a control unit for controlling the operation of each configuration.
DEVICE FOR LIGHT STIMULATING A BRAIN