Navigation Links
Colorblind Individuals have expanded color vision

Deuteranamolous patients suffer from color blindness due to X-chromosome variations, which make them unable to differentiate between colors but have an increased sensitivity to differentiate two color dimensions//, which are unable to be differentiated by normal persons. The results of these studies carried out by Professor John Mollon and colleagues, University of Cambridge had been published in the Journal Current Biology.

Colors are differentiated by the eyes by cone photoreceptors, which are activated by different wavelengths and in X-chromosome linked variants they have an color blindness to differentiate different colors and these sensitivities are altered in deuteranomalous colorblind individuals because they possess a variant form of one of the cone photoreceptors--the sensitivity of cones that should be "middle-wave" is shifted toward that of "long-wave" cones, resulting in decreased ability to differentiate between some colors that are easily distinguishable by those with normal color vision. In theory, however, it is possible that owing to the altered sensitivities of their cone photoreceptors, deuteranomalous individuals may be sensitive to color differences that are not apparent to those with normal color vision.

The researchers conducted the experiment in deuteranamolous and "color-normal" individuals to report whether they were able to distinguish between pairs of colors that were theoretically predicted to look different to deuteranamolous colorblind individuals but to appear the same to those with normal color vision. Indeed, the researchers found that some color pairs were only seen to be different by deuteranamolous individuals. The finding suggests that although these individuals may be blind to some colors accessible by color-normal individuals, they also have a sensitivity to a "color dimension" that is inaccessible to those with normal color vision.

The researchers point out that because deuteranamolous colorblin dness is caused by an X-chromosome-linked genetic alteration, and because women randomly inactivate one of their two X chromosomes in each of their cells, women who are carriers of the deuteranamoly trait (and hence have one normal X chromosome) are predicted to express four types of cone photoreceptor--the three normal cone types, as well as the cone with a shifted wavelength sensitivity. Thought it is unclear whether this would appreciably affect color vision in a way that allows expanded color sensitivities without the colorblindness experienced by deuteranamolous individuals, a test similar to that utilized in the present study could potentially be used to test this possibility.

Source: Eurekalert

Related medicine news :

1. Individuals with sleep related breathing disorders more prone to heart disease
2. Excess Weight Can Affect Individuals as They Age
3. Hypnosis Can Help Individuals Quit Smoking
4. Good News For Individuals Suffering From Frequent Throat Infections
5. Drug Found To Bring Relief For Individuals With Early Parkinson’
6. Individuals With Metabolic Syndrome At Risk of Dying From Heart Disease
7. Common Infections Found To Raise An Individuals Risk Of Having A Heart Attack Or Stroke
8. Individuals Born In May At A Higher Risk Of Developing Multiple Sclerosis
9. Gene Variation Associated With Better Mobility For Older Individuals
10. Increased Risk Of Kidney Failure In Obese Individuals
11. Diagnosing Prostate Cancer is Harder in Obese Individuals
Post Your Comments:

(Date:11/24/2015)... ... November 24, 2015 , ... It takes only three to ... it is critical that the first impression be positive and reflects business values. If ... to buy anything or want to return. They will also share their thoughts about ...
(Date:11/24/2015)... (PRWEB) , ... November 24, 2015 , ... In response ... growing epidemic as deaths from prescription opioids in the United States grew 400 percent ... In 2013 alone, opioids were involved in 37 percent of all fatal drug overdoses. ...
(Date:11/24/2015)... ... November 24, 2015 , ... The American Association of ... local poison centers through donations on Tuesday, Dec. 1, 2015. Since 2012, the ... that inspires people to collaborate in improving their local communities and help give ...
(Date:11/24/2015)... ... ... With Thanksgiving right around the corner, holiday travel season is about to ... and vehicle. , According to the National Highway Traffic Safety Administration, 301 people were ... following safety tips from the NHTSA: , Inspect ...
(Date:11/24/2015)... ... November 24, 2015 , ... Abington ... an Aetna Institute of Quality® Bariatric Surgery Facility for treating individuals living with ... of health care services available to its members to help them make informed ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... , Nov. 24, 2015 Avery Biomedical Devices ... pleased to announce the appointment of Anders Jonzon ... Dr. Jonzon is ... at Children,s Hospital, Uppsala University, Uppsala and Children,s Hospital, ... he was a fellow at the Cardiovascular Institute (UCSF). ...
(Date:11/24/2015)... , November 24, 2015 ... --> adds Latest Guidebook for ... of 217 pages published in November 2015 to ... online business intelligence library at . ... of the fastest growing global economies with a ...
(Date:11/24/2015)... 24, 2015  Ascendant Solutions, Inc. (Pink Sheets: ASDS ... of Directors has declared a special 1 percent stock dividend ... payable December 14, 2015, to shareholders of record December 7, ... additional shares of common stock. --> ... a strong endorsement of our confidence in Ascendant,s growth strategy ...
Breaking Medicine Technology: