Abstract
The purpose of this study was to demonstrate meridian functions by which the intelligence system processed minute information. Twenty males and females, aged from 12 to 83, were radiated using light emitting diodes (LEDs) without direct touch. Their reactions were measured with a single squarevoltage pulse method. Results indicated significant differences of reactions according to wavelength. It was important that minute photo-information could be transmitted in the intelligence system. These results suggested that the system sensed with minute electromagnetic information may be existence.