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Latest Visual system Stories

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...

2011-12-21 12:56:53

Scientists model brain structure to help computers recognize objects An essential question confronting neuroscientists and computer vision researchers alike is how objects can be identified by simply "looking" at an image. Introspectively, we know that the human brain solves this problem very well. We only have to look at something to know what it is. But teaching a computer to "know" what it´s looking at is far harder. In research published this fall in the Public Library of...

2011-12-07 22:12:21

A new visual illusion has shed light on a long-standing mystery about how the brain works out the 3D shapes of objects As dizzying as it may sound, the impression that we are living in a 3D world is actually a continuous fabrication of our brains. When we look at things, the world gets projected onto the retina and information about the third dimension is lost–a bit like when a 3D object casts a shadow onto a flat, 2D wall. Somehow the brain is able to reconstruct the third dimension...

2011-12-06 11:25:39

Thanks to a new study of the retina, scientists at UC Santa Barbara have developed a greater understanding of how the nervous system becomes wired during early development. The findings reflect the expansion of developmental neurobiology and vision research at UCSB. The work is described in a recent publication of the Journal of Neuroscience. The research team examined the connectivity of nerve cells, called neurons, in mice. Neurons communicate with one another via synapses where the...

2011-12-02 13:43:46

We don´t see only what meets the eye. The visual system constantly takes in ambiguous stimuli, weighs its options, and decides what it perceives. This normally happens effortlessly. Sometimes, however, an ambiguity is persistent, and the visual system waffles on which perception is right.  Such instances interest scientists because they help us understand how the eyes and the brain make sense of what we see. Most scientists believe rivalry occurs only when there´s...

2011-12-01 01:06:47

Different brain structures control eye reflexes in the course of life Structures in the midbrain that developed early in evolution can be responsible for functions in newborns which in adults are taken over by the cerebral cortex. New evidence for this theory has been found in the visual system of monkeys by a team of researchers from the RUB. The scientists studied a reflex that stabilizes the image of a moving scene on the retina to prevent blur, the so-termed optokinetic nystagmus. They...


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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Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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