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:2/6/2016)... (PRWEB) , ... February 06, 2016 , ... Shark ... to announce the launch of a new DRTV campaign with Belly Bands. , Having ... tried everything from sprays to puppy pads and find nothing works, get Belly ...
(Date:2/5/2016)... ... 2016 , ... Love is in the air at King Kullen! The local ... packaging. This staple for Valentine’s Day is a must-have, and can be picked up ... not only are long-stem roses available, but also other flower bouquets, elegantly wrapped and ...
(Date:2/5/2016)... ... February 05, 2016 , ... Successful recruitment and ... clinical and scientific initiatives have all marked the last 12 months at Roswell ... CEO of the nation’s oldest cancer center, Candace S. Johnson, PhD, outlined the ...
(Date:2/5/2016)... ... February 05, 2016 , ... ... addition of micro-needling services in their Napa Valley office. The technique utilizes the ... Surgery Associates, Dr. Canales and Dr. Furnas, are part of only a select ...
(Date:2/5/2016)... ... ... After years as an active staff surgeon and having served as the director ... transitioned to chief of the Division of Plastic Surgery at what is now known ... began a second three-year term in January of 2016. , The original selection was ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)...  ivWatch, a medical devices company, is one of five ... Governor Terry McAuliffe,s office. ivWatch will be receiving ... an event to be held at the Science Museum of ... and business that have made significant contributions to science. ... http://photos.prnewswire.com/prnh/20160205/330117LOGO ...
(Date:2/5/2016)... Ala. , Feb. 5, 2016  Patients in ... high intensity focused ultrasound (HIFU) therapy no longer have to ... to announce its partnership with Urology Centers of Alabama ... the newly FDA-cleared procedure for qualifying patients. ... their expertise in the treatment of prostate cancer using many ...
(Date:2/5/2016)... Feb. 5, 2016 ... of the "Global Musculoskeletal Partnering 2010-2016: ... profile to their offering. --> ... of the "Global Musculoskeletal Partnering 2010-2016: ... profile to their offering. --> ...
Breaking Medicine Technology: