New Reaction Timer for Physiological and Psychological Studies

In physiological and psychological measurements, the response to some form of external stimulus is required. The instrumentation used for the measurement of Reaction Time is vital part of the main instrument system. Instrument design reported here is suitable for the measurement of Reaction. Time under environmental stress. The stimulus are visual (flash of light andauditory tone). This instrument is solidstate, portable and can be used with any electronic timer.