Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Humans see colour differently in the summer

RATE THIS! +10
Posted in Science on 18th Aug, 2015 11:57 PM by AlexMuller

Humans see colour differently in the summer with yellow seeming more green than in the winter, scientists have shown for the first time. Researchers at York University looked at how colour perception changes between seasons and in particular how humans process the colour known as unique yellow.

 

Humans identify four unique hues; blue, green, yellow and red, that do not appear to contain mixtures of other colours. Unique yellow is particularly interesting to scientists as it is stable across large populations, everyone agrees what unique yellow looks like despite the fact that people’s eyes are often very different.
 
The researchers in the Department of Psychology wanted to discover why this colour is so stable and what factors might make it change. They thought that unique yellow might depend not on the biology of the eye but on the colour of the natural world.
 
“What we are finding is that between seasons our vision adapts to changes in environment,” said PhD student and lead author, Lauren Welbourne. “So in summer when there is a much larger amount of foliage, our visual system has to account for the fact that on average we are exposed to far more green.
 
“In York, you typically have grey, dull winters and then in summer you have greenery everywhere. Our vision compensates for those changes and that, surprisingly, changes what we think ‘yellow’ looks like. It’s a bit like changing the colour balance on your TV.”
 
The researchers tested 67 men and women in January and June. Participants were placed in a darkened room, allowed to adjust to the light and then on a machine called a colorimeter asked to adjust a dial backwards and forwards until they felt they had reached the point where it had reached unique yellow, with no hint of a green or red.
 
They found that in June volunteers adjusted more green out of yellow than in January, and added more in January to get back to yellow, suggesting that their eyes were viewing the colours differently. Welbourne said the research sheds new light on the complex workings of the visual system.
 
“This is the first time natural changes in the environment have been shown to affect our perception of colour,” she said.

Tags: coloreyevisionbrainperceptionpsychology

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Business on 2017-05-27 11:41:40
    Google reportedly launched an AI investment program..read more
    Posted in Software on 2017-05-27 11:31:03
    How chatbot artificial intelligence will evolve over the.....read more
    Posted in Medicine on 2017-05-27 11:24:28
    Mind-Controlled Computer Retrains Stroke Victims' Brains.....read more
    Posted in Business on 2017-05-26 15:00:47
    Solar jobs growing 17 times faster than US economy..read more
    Posted in Science on 2017-05-26 14:50:23
    Schiaparelli: Crashed lander was ill-prepared for Mars..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me