Light irradiation device for improving cognitive symptoms and depression-like symptoms, room equipped with this light irradiation device, and lighting apparatus for improving cognitive symptoms and depression-like symptoms
In a light irradiation device 20 for improving cognitive symptom and depression symptom according to the present invention, photostimulation is given to a retina by continuous flashing of a light source 21 of frequency of 1 to 10 Hz, Homer 1a is made to continuously express by the photostimulation, and BK-type potassium channel in pyramidal cell of cerebral cortex is activated. It is possible to exert an effect equivalent to a depression symptom improving effect obtained by an electroconvusion stimulation device, an effect equivalent to a depression symptom improving effect and an effect equivalent to a cognitive symptom improving effect obtained by a transcranial magnetic stimulation device. It is possible to utilize these devices also in home environment as compared with an electroconvusion stimulation device and a transcranial magnetic stimulation device which are limited to treatment in clinical institutions as opposed to home environment.
