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Latest Visual system Stories

2012-03-21 15:24:23

Scientists from Tuebingen discovered new functions of brain regions that are responsible for seeing movement When observing a fly buzzing around the room, we should have the impression that it is not the fly, but rather the space that lies behind it that is moving. After all, the fly is always fixed in our central point of view. But how does the brain convey the impression of a fly in motion in a motionless field? With the help of functional magnetic resonance imaging (fMRI) scientists...

2012-03-14 12:55:12

For the first time, scientists at the University of Wisconsin-Madison have made early retina structures containing proliferating neuroretinal progenitor cells using induced pluripotent stem (iPS) cells derived from human blood. And in another advance, the retina structures showed the capacity to form layers of cells — as the retina does in normal human development — and these cells possessed the machinery that could allow them to communicate information. (Light-sensitive...

2012-02-22 12:04:02

If you are looking for a particular object – say a yellow pencil – on a cluttered desk, how does your brain work to visually locate it? For the first time, a team led by Carnegie Mellon University neuroscientists has identified how different neural regions communicate to determine what to visually pay attention to and what to ignore. This finding is a major discovery for visual cognition and will guide future research into visual and attention deficit disorders. The study,...

2012-02-21 16:00:00

PITTSBURGH, Feb. 21, 2012 /PRNewswire/ -- If you are looking for a particular object -- say a yellow pencil -- on a cluttered desk, how does your brain work to visually locate it? (Logo: http://photos.prnewswire.com/prnh/20020422/CMULOGO ) For the first time, a team led by Carnegie Mellon University neuroscientists has identified how different neural regions communicate to determine what to visually pay attention to and what to ignore. This finding is a major discovery for visual cognition...

2012-02-09 00:51:31

A new study identifies specific cell-stress signaling pathways that link injury of the optic nerve with irreversible vision loss. The research, published by Cell Press in the February 9 issue of the journal Neuron, may lead to new strategies that will help to protect vulnerable neurons in the retina after optic nerve damage and diseases. Retinal ganglion cells (RGCs) send visual information from the retina to the brain through long processes called axons. The axons of the RGCs are bundled...

2012-01-23 22:26:30

Members of a University of Pennsylvania research team have shown that they can prevent, or even reverse, a blinding retinal disease, X-linked Retinitis Pigmentosa, or XLRP, in dogs. The disease in humans and dogs is caused by defects in the RPGR gene and results in early, severe and progressive vision loss. It is one of the most common inherited forms of retinal degeneration in man. "Every single abnormal feature that defines the disease in the dogs was corrected following treatment,"...

2012-01-16 10:41:51

Brain circuits for visual categorization revealed by new experiments Hundreds of times during a baseball game, the home plate umpire must instantaneously categorize a fast-moving pitch as a ball or a strike. In new research from the University of Chicago, scientists have pinpointed an area in the brain where these kinds of visual categories are encoded. While monkeys played a computer game in which they had to quickly determine the category of a moving visual stimulus, neural recordings...

2012-01-06 15:17:48

Pioneering vision study in mice will help revolutionize the study of brain function and mental disease There's a 3-D world in our brains. It's a landscape that mimics the outside world, where the objects we see exist as collections of neural circuits and electrical impulses. Now, scientists at the Salk Institute for Biological Studies are using new tools they developed to chart that world, a key step in revolutionizing research into the neurological basis of vision. For the first...

2012-01-04 08:53:42

Complementary image processing in the cerebral hemispheres The left brain/right brain dichotomy has been prominent on the pop psychology scene since Nobel Laureate Roger Sperry broached the subject in the 1960s. The left is analytical while the right is creative, so goes the adage. And then there is the quasi-scientific obsession with "the face." Facial recognition technology and facial microexpressions are the stuff of television crime dramas, such as Person of Interest and Lie to Me....

2011-12-22 07:33:06

Armed with a new ability to find retinal anomalies at the cellular level, neurobiologists at St. Jude Children's Research Hospital have made a discovery they hope will ultimately lead to a treatment for cancer of the retina. While much work remains, Oak Ridge National Laboratory's specialized tracing algorithm allows researchers to analyze thousands of cells instead of just a few dozen. This tool has helped reveal a previously undiscovered role of Rb, the retinoblastoma tumor suppressor...


Latest Visual system Reference Libraries

Eye
2013-04-30 13:41:59

1. vitreous body 2. ora serrata 3. ciliary muscle 4. ciliary zonules 5. canal of Schlemm 6. pupil 7. anterior chamber 8. cornea 9. iris 10. lens cortex 11. lens nucleus 12. ciliary process 13. conjunctiva 14. inferior oblique muscle 15. inferior rectus muscle 16. medial rectus muscle 17. retinal arteries and veins 18. optic disc 19. dura mater 20. central retinal artery 21. central retinal vein 22. optic nerve 23. vorticose vein 24. bulbar sheath 25. macula 26. fovea 27. sclera 28....

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