A staffer in Dr. Margaret Naeser's lab demonstrates the equipment built especially for the research: an LED helmet (Photomedex), intranasal diodes (Vielight), and LED cluster heads placed on the ears (MedX Health). The real and sham devices look identical. Goggles are worn to block out the red light. The near-infrared light is beyond the visible spectrum and cannot be seen. (Credit: Naeser lab)
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