Navigation Links
UCSB scientists make advances in neuroscience and vision research
Date:12/6/2011

ells. The latter are neurons that in turn project information to locations within the brain where further visual processing of the retinal image takes place.

The lead author on the study, Sammy Lee, was a postdoctoral researcher working in Reese's lab and supported by a C.J. Martin National Health & Medical Research Council fellowship from Australia during the course of the study. Lee labeled individual cone bipolar cells with a fluorescent dye through a new microinjection procedure developed by Patrick Keeley, a graduate student in the Reese lab.

"What Dr. Lee has shown is that cone bipolar cells modulate the size of their dendritic fields (branched extensions of the neuron) in association with the local density of like-type neurons," said Reese. "One line of mice has conspicuously fewer cone bipolar cells, each now with a larger dendritic territory, while the other line shows heightened densities and correspondingly smaller dendritic fields."

Other studies have suggested such homotypic (like-type) modulation of dendritic field size, but the current study directly shows this modulation following genetic manipulation of neuronal density, according to Reese.

Additionally, the researchers found that connectivity with the afferent population of cone photoreceptors is impacted directly, with the larger dendritic fields being innervated by more cones, and the smaller dendritic fields connecting with fewer cones. At any individual cone, the number of dendritic endings associating with that cone was not observed to change, so that the total number of connections made by a cone bipolar cell was remarkably plastic, defined solely by the number of cone contacts formed.

"This developmental plasticity in dendritic growth and synapse number may be well-suited to ensure uniform coverage and connectivity between two populations of neurons afferents and their targets when the number of cells in each population is specified independen
'/>"/>

Contact: Gail Gallessich
gail.g@ia.ucsb.edu
805-893-7220
University of California - Santa Barbara
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scientists discover how brain corrects bumps to body
2. Scientists rediscover rarest US bumblebee
3. EMBO awards Installation Grants to 7 European scientists
4. Singapore and China scientists perform first Asian genome-wide association study on spine disease
5. AGU meeting: Stanford scientists subject rocks to hellish conditions to combat global warming
6. Some atheist scientists with children embrace religious traditions, according to new Rice research
7. Scientists use laser imaging to assess safety of zinc oxide nanoparticles in sunscreen
8. Controlled disorder -- scientists find way to form random molecular patterns
9. Taking the pulse of an iceberg -- scientists simulate laser imaging for NASA missions
10. Addex scientists discover GLP-1 induced interaction between GLP-1 and GIP receptors
11. Hopkins scientists turn on fountain of youth in yeast
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UCSB scientists make advances in neuroscience and vision research
(Date:7/24/2014)... is available in German . ... Norway and they are a common sight on the roads ... cars topped the list of new vehicle registrations for the ... in Germany, where electric vehicles claim only a small portion ... roads in Germany, only a mere 8000 are electric powered. ...
(Date:7/24/2014)... a virus living inside your gut that has gone ... by researchers at San Diego State University has found ... to a newly described virus, named crAssphage, which infects ... Bacteroidetes . This phylum of bacteria is thought ... diseases. The research appears today in Nature Communications ...
(Date:7/23/2014)... The U.S. Environmental Protection Agency (EPA) today ... the University of Massachusetts Amherst School of Public ... three-year, $700,000 Science to Achieve Results (STAR) grant ... by Native subsistence hunters in subarctic North America ... exposure and to provide culturally-relevant recommendations for mitigation. ...
Breaking Biology News(10 mins):Nano-supercapacitors for electric cars 2Nano-supercapacitors for electric cars 3Newly discovered gut virus lives in half the world's population 2Newly discovered gut virus lives in half the world's population 3Studying impacts of indoor air pollution on tribal communities 2Studying impacts of indoor air pollution on tribal communities 3
... is underway that hopes to use a patient's own immune ... immunotherapy, is a specialty procedure performed in only a handful ... Medical Center. , Julian A. Kim, M.D., chief of surgical ... grant from the National Institutes of Health for a five-year ...
... 12 surgeons and 21 surgical residents, video game skill ... a simulated surgery skills course, according to a report ... of the JAMA/Archives journals. , James C. Rosser Jr., ... colleagues asked 33 surgeons (21 residents and 12 attending ...
... new study has pinpointed a natural ingredient of human ... for human AIDS, from infecting immune cells and multiplying. ... progression of HIV to full-blown AIDS and—because it works ... to the development of another class of drugs in ...
Cached Biology News:Discovery of an HIV inhibitor in human blood points to new drug class 2Discovery of an HIV inhibitor in human blood points to new drug class 3
(Date:7/24/2014)... July 24, 2014  ECC West Africa, LLC (ECC) ... with University College Hospital (UCH) Ibadan Board of ... to finance, design, construct, and operate and maintain a ... . Under the first of the 4-phase project, ... and funding applications. UCH Ibadan intends to finance and ...
(Date:7/24/2014)... materialise. Yet, scientists are making progress in devising ... such approach relies on quantum dotsa kind of ... field. A new study demonstrates that changing the ... with electrical impulses can help better control them. ... used as quantum information units, which would produce ...
(Date:7/24/2014)... , July 24, 2014 Research and ... "Global Cell Culture Market 2014-2018" report to their ... Cell culture is the in vitro growth of ... research, cell studies, and biopharmaceutical production. Cell culture is ... Cell culture instruments and cell culture consumables are necessary ...
(Date:7/24/2014)... July 24, 2014 SRI International has been ... National Institute of Allergy and Infectious Diseases (NIAID), part ... development of potential therapies for HIV infection and AIDS. ... HIV and AIDS and the complications and opportunistic infections ... preventing sexual transmission of HIV. According ...
Breaking Biology Technology:ECC Signs a Contract for the Finance, Design, and Construction of a Premier Cancer Institute in Ibadan, Nigeria 2Global Cell Culture Market 2014-2018: Key Vendors are Becton, Dickinson and Co, EMD, GE Healthcare, Lonza Group, Sigma Aldrich and Thermo Fisher Scientific 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 3
... professor of materials science and engineering at Virginia ... the Friedrich Wilhelm Bessel Research Award presented by ... is for scholars, internationally renowned in their field, ... ago and who are expected to continue to ...
... Investor Uprising ( www.investoruprising.com ) has released "A Guide ... best biotech Exchange Traded Funds (ETFs) and mutual funds, ... Website. (Logo: http://photos.prnewswire.com/prnh/20110411/NY80781LOGO-a) "A ... market, identifying the leading biotech mutual funds and ETFs. ...
... 2011 Aaron Mitchell, managing principal at global management consulting ... consultants of 2011 by Consulting Magazine. Mitchell was recognized for ... over several years and during a major, recent product launch. ... the top consultants," said Mitchell, who has more than 10 ...
Cached Biology Technology:Virginia Tech's Kathy Lu receives Humboldt Foundation research award 2Investor Uprising Publishes Free Biotech Investment Report 2Investor Uprising Publishes Free Biotech Investment Report 3Managing Principal at ZS Associates Named One of Consulting Magazine's Top 25 Consultants of 2011 2