Influence of stress (cold) on visual reaction time (VRT) for red, green and yellow colours and auditory reaction time (ART) for high and low pitched sounds was studied in 60 healthy subjects (17-19 years) by digital display response time apparatus. Pain threshold and pain tolerance time were 23.02 +/- 8.11 and 249.35 +/- 64.88 sec. respectively. During the standard cold pressor test (CPT), ther...