Navigation Links
Seeing Is Believing Does Not Hold Good For Color Perception

It has been regarded that color perception is dependent on the specialized cells of the eye. This may no longer// be true as the results of a research state that our perception of color is controlled much more by our brains than by our eyes.

The number of color-sensitive cones in the human retina differs dramatically among people—by up to 40 times—yet people appear to perceive colors the same way. The study has shown that color perception goes far beyond the hardware of the eye, and leads to a lot of interesting questions about how and why we perceive color.

The researchers have exploited a technology known as adaptive optics that was originally used by astronomers. This laser-based system maps out the topography of the inner eye in exquisite detail that would not have been possible otherwise.

The pigment that allows each cone in the human eye to react to different colors is very fragile. For the experiment, the researchers allowed light to shine directly into the eye to determine what wavelengths each cone reflects and absorbs, and thus to which color each is responsive.

Each subject was asked to tune the color of a disk of light to produce a pure yellow light that was neither reddish yellow nor greenish yellow. Everyone selected nearly the same wavelength of yellow, showing that all of them had the same perception regarding the yellow color. However, there was a considerable discrepancy when the retinal cells were examined. It was infact greater than a 40:1 ratio, even when all the cases were ‘seeing’ the same color yellow.

This finding throws light on the fact that everyone tested had the same color experience despite the difference in his or her visual system. It is therefore believed that some kind of normalization or some kind of circuit in the brain should be present to balance the observed difference.

These experiments show that color is defined by our experience in the world, and since we all share the same world, we arrive at the same definition of colors. The team has focused itself towards identification of a genetic basis for this large variation between retinas.

Medindia on Anatomy of eye:

The retina is the eye's sensitive layer that sends visual signals to the brain. To produce a sharp image, the lens must remain cler.
'"/>




Related medicine news :

1. Womens Self-Esteem Not Lowered By Seeing Ultra Thin Models
2. Love is blind and Seeing is not Believing – Parents Don’t Believe Their Children Are Overweight!!
3. A Visually Impaired Patient Pioneers The Seeing Machine
4. Are Women Seeing the Most Experienced Breast Cancer Surgeons?
5. Seeing is Believing – Cigarette Packs in India to Carry Graphic Description of Risk
6. Love is blind and Seeing is not Believing – Parents Don’t Believe Their Children Are Overweight!!
7. Seeing is Believing – Cigarette Packs in India to Carry Graphic Description of Risk
8. Detecting Colorectal Cancer
9. Preventing Colorectal Cancer
10. Screening Test For Early Diagnosis Of Colorectal Cancer
11. Milk Found To Lower Colorectal-Cancer Risk By 12 %
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/21/2017)... , ... April 21, 2017 , ... Providing broad access ... in opposition, but there is a better way to address this problem. , That ... of Pharmacy, Public Policy and Economics at the University of Southern California, who served ...
(Date:4/21/2017)... ... , ... Brady (NYSE:BRC), a global leader in industrial and safety ... vinyl label materials received certification for the BS5609 British Marine Standard. This internationally ... legible, for use on chemical drums shipped by sea. , “Achieving BS5609 ...
(Date:4/21/2017)... ... April 21, 2017 , ... The VIA Agency , ... for Theravent, Inc. , the makers of a revolutionary new device clinically ... is now working to expand distribution in anticipation of a national launch. VIA ...
(Date:4/21/2017)... , ... April 21, 2017 , ... ... announced an exciting new partnership with the highly regarded and well renowned Asian ... highly innovative, myTAP & myTAP PAP Nasal Pillow Mask, and will stabilize and ...
(Date:4/21/2017)... ... April 21, 2017 , ... BrightStar Care Salt Lake City, a home ... of Utah (APCUT) and has appointed Rex Wheeler as its new Director of Business ... our agency and our ability to provide quality care to the community,” said Tammara ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... , April 20, 2017  Cogentix Medical, ... focused on providing the Urology, Uro/Gyn and Gynecology ... that Ash Keswani has joined the Company as ... this newly created position, Mr. Keswani will report ... CEO. "Our organization is delighted that ...
(Date:4/20/2017)... April 20, 2017 Research and Markets has ... Innovation Driven by Rapidly Expanding Injectables Market and Increasing Usage of ... ... delivery technologies will rise from USD 20 Billion in 2015 to ... Drug Delivery Technologies - Innovation Driven by Rapidly Expanding Injectables Market ...
(Date:4/20/2017)... 2017 Eyevensys, a private biotechnology ... gene expression technology that enables the safe, local, sustained ... a wide range of ophthalmic diseases, announces it has ... Regulatory Agency (MHRA) to advance its technology into clinical ... The ...
Breaking Medicine Technology: