A recent study has suggested that colour perception may be restored during sleep after gradually becoming less neutral throughout the day.
According to a research presented at an annual meeting of the Associated Professional Sleep Societies LLC, colour perception drifts away from neutrality during wakefulness and is restored during sleep.
Principal investigator and lead author Bhavin Sheth, assistant professor of electrical and computer engineering at the University of Houston in Texas, said the study showed that people who were about to got to sleep classified the colour grey as having a significantly greenish tint, while overnight sleep restored this perception.
"This is among the first studies to investigate the effects of sleep on perception. Our findings suggest that wakefulness causes colour classification to drift away from neutrality," he said.
Recently, Indian researchers claimed that a new kind of Contact lens, known as the Corneal Refractive Therapy lens, only needs to be worn when the user sleeps for them to have perfect eyesight during the following day.
by Emily Tait