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Sleep corrects the drift in color perception that occurs during wakefulness.
Sleep Colors Your View Of The World: Study Suggests Sleep May Restore Color Perception
According to the authors, scientists had not previously investigated how sleep might affect the way we view the world around us.
"This is among the first studies to investigate the effects of sleep on perception," said principal investigator and lead author Bhavin Sheth, assistant professor of electrical and computer engineering at the University of Houston in Texas. "Our findings suggest that wakefulness causes color classification to drift away from neutrality, and sleep restores color classification to neutral."
The study involved five people who viewed a full-field, homogenous stimulus of either slightly reddish or greenish hue. The observers had to judge whether the stimulus was greener or redder than their internal perception of neutral gray. Across trials the hue was varied. One pair of monocular tests was performed just before participants went to sleep, and testing was repeated after participants slept for an average of 7.7 hours.
Further testing found that overnight, full-field monocular stimulation with a flickering red "ganzfeld" failed to nullify the resetting, sleep-induced effect. An achromatic stimulus was still less likely to be classified as greenish following sleep, with no sta¬tistical difference in the magnitude of the resetting in each eye. According to the authors, this suggests that color resetting is an internal process that is largely unaffected by external monochromatic visual stimulation.
http://www.redorbit.com/news/health/1877580/sleep_colors_your_view_...
Thanks to sleepwhisperer.net
Views: 100
Replies to This Discussion
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Permalink Reply by Banyon on
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Thanks Rock. I have passed the link to three of my clients who are in the color business. Maybe this finding will affect the way they do shade evaluation and matching.
I will post any pertinent comments when I receive them. Maybe they should only hire color technicians who promise to sleep well every night and then only work them until noon!
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Permalink Reply by RChatty on
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That's quite interesting. I used to always see everything with a red tint in just one eye. (The one that is always blood shot,and the one that still swells up whenever it pleases, and the one that's on the same side as the ear that's always draining.) It would come and go as it desired (the redness thereof), but I don't notice it as much now. Do you think there was any connection with sleep apnea there?
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Permalink Reply by 99 on
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when i was an electroplater we used to test the PH of solutiions in the vats with instructions that phlorecent lighting would appear to alter the PH value
with that in mind when shopping i would always go to the window to check the colour if the item was under phlorecent lightinbg
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Permalink Reply by RockRpsgt on
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I have worked nights for 18 years. Fourth shift is what I have always called my hours. I have either worked from late afternoon to around 5am, or 7pm to 7/8am. After working these hours for so long I have noticed how different dawn looks when you have not slept. The colors never seem to be quite right. Certain colors tend to jump out while others fade away. The grass is always so bright after working a night shift! This is why this article was so interesting to me. I can't take credit for finding the article. That belongs to Walt and Lee. I just stole it from their site.
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