HOME >> BIOLOGY >> NEWS
Retina adapts to light changes by rewiring itself

PORTLAND, Ore. A new Oregon Health & Science University study is opening scientists' eyes to the retina's ability to rewire itself so it can adapt to different levels of ambient light.

The study, published this month in the journal Neuron, and funded by a research grant from the National Eye Institute, National Institutes of Health, shows that the retina and its circuits are much more pliable than scientists previously thought.

"The retina has generally been thought of as a fixed circuitry where there shouldn't be much plasticity," said study co-author Henrique von Gersdorff, Ph.D., adjunct associate professor of cell and developmental biology, OHSU School of Medicine, and scientist at the Vollum Institute.

"But more and more people are finding that the retina does a lot of parallel things at the same time. For example, the direction of motion of objects that are moving into a visual scene is first detected in the retina and then transmitted to the brain."

The retina is a thin, light-sensitive sheet of neurons in the back of the eye that encodes three basic features of the objects in our environment color, shape and motion and sends the coded information to the brain. The early processing steps for vision, therefore, occur in the retina. Deep inside this sheet of interconnected neurons, at a depth called the inner plexiform layer, a tremendous processing of this visual information takes place, before it is projected to the brain through the optic nerve.

Small nerve cells called amacrine cells help bipolar cell terminals filter the bombardment of signals being sent by photoreceptors to bipolar cells before they're forwarded on to other nerve cells, called ganglion cells, which directly connect to the brain. This filtering process in the inner plexiform layer is believed to contribute to fundamental features of vision, such as sensitivity to light, temporal processing of motion, and detection of contrast.

The new st
'"/>

Contact: Jonathan Modie
modiej@ohsu.edu
503-494-8231
Oregon Health & Science University
24-May-2005


Page: 1 2 3

Related biology news :

1. Retina adapts to seek the unexpected, ignore the commonplace
2. Retinal stem cells can regenerate after transplant
3. Asexual worm quickly adapts to soil contamination
4. Research suggests mens sexual behavior adapts to perceived threats
5. Other highlights in the Aug. 7 JNCI
6. Research team enlightens the reasons for severe blindness
7. Coelacanth fossil sheds light on fin-to-limb evolution
8. Molecule blocks gene, sheds light on liver cancer
9. ESA mission highlighted at remote sensing conference
10. Surprising new species of light-harvesting bacterium discovered in Yellowstone
11. Other highlights in the July 24 JNCI

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/3/2020)... ... , ... Accumen Inc. is helping healthcare get better, faster. ... to provide COVID-19 saliva testing kits nationally. , “Accumen has been partnering ... years. Early in the COVID-19 crisis, we identified supply chain gaps and began ...
(Date:7/22/2020)... ... July 21, 2020 , ... USDM Life ... and compliance, announces a new solution to manage regulated workloads on Microsoft Azure. ... their technology stack complies with FDA and global regulations. USDM's new managed service ...
(Date:7/10/2020)... CHURCH, Va. (PRWEB) , ... July 08, 2020 ... ... The Latest on Cell and Gene Therapy Regulation, An FDAnews Webinar, Wednesday, July ... may need a comparability study, but what is the most effective way to ...
Breaking Biology News(10 mins):
(Date:8/31/2020)... , ... August 29, 2020 , ... ... Animal Nutrition manufacturing capability in Wuxi, China. The new plant operation will provide ... standards and advanced technology. , “This facility will improve the flexibility of ...
(Date:8/12/2020)... ... August 11, 2020 , ... ... cold chain validation engineering firm, is making available for free its new ... to incorporate concurrent transport simulation testing into today’s biologics licensing application (BLA). ...
(Date:8/3/2020)... ... August 03, 2020 , ... Introducing Ardent Animal Health – MediVet Biologics rebrands ... , Known as MediVet Biologics since its formation in 2016, the company is ... Animal Health will build on its base of innovative therapies for osteoarthritis and cancer. ...
(Date:7/31/2020)... (PRWEB) , ... July 29, 2020 , ... ... that can combine up to three different materials for use with CRM, neurostimulation, ... up to three materials to meet specific design requirements, performance, and cost criteria; ...
Breaking Biology Technology:
Cached News: