Navigation Links
Color perception is not in the eye of the beholder: It's in the brain

First-ever images of living human retinas have yielded a surprise about how we perceive our world. Researchers at the University of Rochester have found that 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 findings, on the cover of this week's journal Neuroscience, strongly suggest that our perception of color is controlled much more by our brains than by our eyes.

"We were able to precisely image and count the color-receptive cones in a living human eye for the first time, and we were astonished at the results," says David Williams, Allyn Professor of Medical Optics and director of the Center for Visual Science. "We've shown that color perception goes far beyond the hardware of the eye, and that leads to a lot of interesting questions about how and why we perceive color."

Williams and his research team, led by postdoctoral student Heidi Hofer, now an assistant professor at the University of Houston, used a laser-based system developed by Williams that maps out the topography of the inner eye in exquisite detail. The technology, known as adaptive optics, was originally used by astronomers in telescopes to compensate for the blurring of starlight caused by the atmosphere.

Williams turned the technique from the heavens back toward the eye to compensate for common aberrations. The technique allows researchers to study the living retina in ways that were never before possible. The pigment that allows each cone in the human eye to react to different colors is very fragile and normal microscope light bleaches it away. This means that looking at the retina from a cadaver yields almost no information on the arrangement of their cones, and there is certainly no ability to test for color perception. Likewise, the amino acids that make up two of the three different-colored cones are so similar that there are no stains that can bind to some
'"/>

Source:University of Rochester


Page: 1 2 3

Related biology news :

1. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
2. Color-blind method opens new doors in DNA sequencing
3. Colorful bacteria more dangerous
4. U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming
5. New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics
6. Cracking the perception code
7. UC Riverside psychologist explores human perception, finds wow factor
8. Face perception is modulated by sexual orientation
9. Patients and their doctors have different perceptions about HIV and its treatment
10. Altered perception of reward in human cocaine addiction
11. A puzzle piece found in unraveling the wiring of the brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Color perception not the eye the beholder the brain

(Date:2/5/2015)... Jan. 27, 2015   Marvin Test ... deployed, innovative test solutions for military, aerospace, ... of its TS-323 GENASYS Test Platform ... (LMSSC). GENASYS is a high-performance PXI-based system ... applications that require performance functional testing. GENASYS ...
(Date:2/5/2015)... 30, 2015  It is gratifying to see that ... for genomic science as a means to better understand ... treatment.  I was honored to participate in today,s White ... program. Since the 1980s my teams ... the first sequenced genome of a free living organism, ...
(Date:1/22/2015)... , Jan. 13, 2015 /PRNewswire/ - Today, FindBiometrics, the leading ... the launch of its new website design. "When ... its infancy", says Peter O,Neill , founder and CEO ... the industry needs involvement from the key players on a ...
Breaking Biology News(10 mins):Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 2Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 3Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 4J. Craig Venter, Ph.D., Co-Founder and CEO, Human Longevity, Inc. (HLI) Participates in White House Precision Medicine Event 2Identity Industry Leading Publication Debuts New Look As Biometrics Hit Mainstream 2
... today that it will receive a tuberculosis (TB) biomarkers ... Challenges in Global Health program, an initiative that seeks ... can radically improve health in the developing world. Urs ... SomaLogic, will pursue an innovative research project to identify ...
... dive behaviour and search for food of southern elephant seals. ... Research in the Helmholtz Association cooperating in a joint study ... Cape Town have discovered that the seals dive deeper for ... to the migration of prey to greater depths and now ...
... 2012 Attention-deficit/hyperactivity disorder (ADHD) affects 5-9% of youth ... methylphenidate and amphetamine products. A recent safety communication from ... patients undergoing ADHD treatment be monitored for changes in ... concern over the risks of stimulant use in youth, ...
Cached Biology News:SomaLogic Inc. receives Grand Challenges tuberculosis biomarkers grant 2Ocean warming causes elephant seals to dive deeper 2Ocean warming causes elephant seals to dive deeper 3Stimulant treatment for ADHD not associated with increased risk of cardiac events in youth 2
(Date:2/26/2015)... (PRWEB) February 26, 2015 The ... -12, at the Ernest N. Morial Convention Center ... (count as of February 19, 2015) displaying products ... industrial, academic, and government labs. The Exposition will ... but not limited to, analytical chemistry; drug discovery; ...
(Date:2/26/2015)... MD (PRWEB) February 26, 2015 RURO, ... provider, released FreezerPro® version 6.2 – the latest update ... FreezerPro® reputation is that of a quick and easy ... work. With the latest version, RURO engineering has enhanced ... import to move large amounts of sample records. ...
(Date:2/26/2015)... (PRWEB) February 26, 2015 Regis Technologies ... the development of oncology drug substances. , Regis Technologies ... of their new Potent Compound Suite (PCS) for 2015. ... 36,000 square foot, cGMP facility in Morton Grove, Illinois. ... manufacturing of potent compounds up to about one kilogram ...
(Date:2/26/2015)... 2015  Epic Sciences announced today that President and ... the 35th Annual Cowen and Company Health Care Conference ... Room, 3rd Floor. The conference will be held at ... Epic is developing diagnostic tests of high clinical ... changes that occur during the course of cancer treatments. ...
Breaking Biology Technology:Pittcon 2015 Announces Exposition Highlights 2RURO Releases FreezerPro® version 6.2 2Regis Extends cGMP Services to Oncology Market 2Epic Sciences to Present at 35th Annual Cowen and Company Health Care Conference 2
... MUNDELEIN, Ill., April 22 Sysmex America, ... Medical Center,s (Canton, OH),beta studies for its ... solution, which combines the Sysmex HST-N hematology,automation ... II TURBO,Link, enables on-demand, automated diabetes testing ...
... Full Control of Belinostat, Consolidating ... Global Rights for the Product TopoTarget Acquires ... - Deal Covers a Payment of USD 26 million (DKK 122.8 ... - Webcast Conference Call to be Held 2pm CET, TopoTarget ...
... DC A new analysis by the Project ... are investing nearly twice as much as the ... potential risks of nanotechnology. The analysis also highlights ... risk-research investment figures for the U.S. , ...
Cached Biology Technology:Mercy Medical Center Completes Beta Studies for Integrated Hematology and Automated Diabetes Testing Solution 2Mercy Medical Center Completes Beta Studies for Integrated Hematology and Automated Diabetes Testing Solution 3Mercy Medical Center Completes Beta Studies for Integrated Hematology and Automated Diabetes Testing Solution 4TopoTarget Successfully Buys Back Full Control of Belinostat 2TopoTarget Successfully Buys Back Full Control of Belinostat 3TopoTarget Successfully Buys Back Full Control of Belinostat 4TopoTarget Successfully Buys Back Full Control of Belinostat 5TopoTarget Successfully Buys Back Full Control of Belinostat 6TopoTarget Successfully Buys Back Full Control of Belinostat 7Europe spends nearly twice as much as US on nanotech risk research 2
... UltraVIEW system and want to enjoy the sensitivity ... No problem. Our experienced team can give ... lasers, Sutter filter wheel, Piezo Stage etc. and ... precision controller unit and workstation... for a lot ...
... Dyad instrument is the most advanced thermal ... world-class thermal performance, the Dyad also boasts ... as point-and-click navigation via touch pad or ... easily and economically expanded to a four-bay ...
...
...
Biology Products: