Device for relieving dementia symptoms

A device for relieving dementia symptoms, comprising:

• a first light stimulation part configured to be disposed at a location within a preset radius from an eyeball and frontal lobe of a patient and configured to radiate light having a preset wavelength band to an optic nerve and frontal lobe of the patient;
• an acoustic stimulation part configured to stimulate a brain of the patient by outputting a sonorant having a gamma frequency band;
• a second light stimulation part configured to be mounted within a location within the preset radius from the eyeball and frontal lobe of the patient and configured to radiate, light having the preset wavelength band, to the optic nerve and frontal lobe of the patient;
• a first light-receiving part disposed within a preset radius from the second light stimulation part and configured to receive light that is reflected by an artery within a skin of the patient after being radiated by the first and second light stimulation parts;
• and
• a plurality of second light-receiving parts disposed outside a preset radius from the second light stimulation part and configured to receive light that is reflected by the frontal lobe of the patient after being radiated by the first and second light stimulation parts,
• wherein a central processing unit is configured to control an operation of the first light stimulation part, the second light stimulation part, and the acoustic stimulation part,
• wherein some of the plurality of second light-receiving parts are disposed to be directed toward a left brain of the patient and remaining of the plurality of second light-receiving parts thereof are disposed to be directed toward a right brain of the patient so that the plurality of second light-receiving parts are able to receive all of a reflected light reflected by the left brain and the right brain, and
• the central processing unit synchronizes an optical signal that is output by the first and second light stimulation parts and an acoustic signal that is output by the acoustic stimulation part,
• wherein each of the first light stimulation part and the second light stimulation part includes a first light source configured to radiate a first light having a wavelength band of 730 nm, and
• a second light source configured to radiate a second light having a wavelength band of 850 nm,
• each of the first light stimulation part and the second light stimulation part outputs the first light and the second light alternately,
• a positive peak point of the sonorant has a phase between a phase synchronized with the first light output by the first light stimulation part and a phase synchronized with the second light output by the second light stimulation part, and
• a phase of the sonorant is adjusted based on an aspect of dementia symptoms of the patient.