An innovative research has demonstrated that sleep corrects the drift in color perception that occurs during restlessness.
Results point out that prior sleeplessness caused the color gray to be classified as having a vaguely but considerably greenish tint. During night sleep restored perception to achromatic balance so that gray was perceived as gray.
Main researcher and lead author Bhavin Sheth, assistant professor of electrical and computer engineering at the University of Houston in Texas mentioned that in accordance with the authors, scientists had not previously investigated how sleep might influence the way we look at the world that surrounds us. This is among the first researches to examine the results of sleep on perception. Also he declared that their findings put forward that sleeplessness causes color classification to drift away from neutrality, and sleep restores color classification to neutral. The study implicated five people who viewed a full-field, homogenous stimulus of both slightly reddish or greenish type and the observers had to judge whether the stimulus was greener or redder than their internal perception of neutral gray.



