Seeing Blue-Yellow Color Perception For The First Time

Color vision has been studied for centuries, but the molecular and cellular intricacies of its neural circuitry have remained an enigma, until now. As reported in a May issue of the Journal of Neuroscience, Penn researchers, led by Peter Sterling, PhD, have -- for the first time -- determined the wiring, neurochemical pathways, and three-dimensional layout of cells in the retina that are involved in blue-yellow color vision that is evident in all mammals.

Knowledge of this retinal structure and biochemistry will lay the foundation for designing artificial retinas and better understanding rare eye diseases. Using the intact retina of a macaque, the scientists created a three-dimensional map of the location of the blue-yellow cells by taking electron micrographs of 320 cross-sections of the retina.

"We photographed the mosaic of retinal cells piece by piece, analyzed over 2,000 images, and then used a computer program to build up a library of the complete structure," explains Sterling, a professor of neuroscience. "By composing this exacting model, we can now isolate and identify the interacting circuitry between layers of the retina."

The findings of Sterling's group also provide clues to the neural processes at work in red-green vision -- the additional, complementary color-vision system that is found in all Old World primates, including humans. Indeed, anthropologists surmise that the red-green system evolved in these primates to allow them to distinguish red, ripe fruits from green tree foliage and to discriminate gender-specific markings during mating season.

The University of Pennsylvania Medical Center's sponsored research and training ranks third in the United States based on grant support from the National Institutes of Health, the primary funder of biomedical research and training in the nation -- $175 million in federal fiscal year 1997. In addition, for the third consecutive year, the institution posted the highest annual growth in the

Contact: Karen Young Kreeger
University of Pennsylvania School of Medicine

Page: 1 2

Related biology news :

1. Seeing the forest for the trees: The future of environmental policy lies in interaction
2. Seeing how plants split water could provide key to our future energy needs
3. Seeing stars after LASIK? Study suggests certain pre-surgery factors may be to blame
4. Seeing one weapon from a food-borne pathogen
5. Seeing How the Brain Changes During Aging
6. The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow
7. Colorado River Conference Aug. 26
8. Hidden cost of Colorado River diversions is $2.4 billion annually
9. Earstones tell fishes tale of early life in the Colorado River estuary
10. Colorectal cancer rates in African Americans equal with insurance parity
11. U. of Colorado professor pioneering tissue engineering from knees to hearts to brains

Post Your Comments:

(Date:8/5/2020)... ... , ... Regenative Labs has received approval from the Centers for Medicare & ... first Wharton’s jelly allografts to be assigned a Q code and be approved for ... Wharton’s jelly allograft product to be recognized as a 361 HCT/P by CMS regulated ...
(Date:7/18/2020)... ... July 16, 2020 , ... A study has been published ... Neoasis™ active noise control device to attenuate typical noises in a simulated neonatal ... the alarm sounds from patient monitors, ventilators and other bedside devices that would ...
(Date:7/2/2020)... ... July 01, 2020 , ... AltruBio Inc. http://www.altrubio.com ... a biologic for the treatment of steroid-refractory acute graft-versus-host disease (SR-aGVHD), at European ... J Martin of the Fred Hutchinson Cancer Research Center, this single-arm, open-label Phase ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... FARMS, Mich. (PRWEB) , ... August 12, 2020 ... ... Consulting Group, Inc. (EMMA International), a global leader in FDA compliance consulting ... of the nation’s fastest-growing private companies. The list represents a unique look at ...
(Date:8/3/2020)... (PRWEB) , ... August 03, 2020 , ... ... collection, today announced Jim Corrigan, President and CEO has been named one of ... broad cross-section of industry sectors, PharmaVoice 100 honorees are selected based on how ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is ... $3950. With 50 million stem cells total, patients may choose which extremities they would ... for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is ...
(Date:7/31/2020)... ... July 29, 2020 , ... ... transmitter systems that can be configured to drive Klystrons, TWTs, IOTs, and magnetrons. ... drive one or two switches in a push-pull configuration; yielding fast fall time ...
Breaking Biology Technology:
Cached News: