|
Home / News / Tags / retina
|
|
The achievement of information on the environment through a sensory pathway is called perception. In the case of the human sight, the brain recognizes instantly a familiar object, from any angle and any distance.A book looks like a book, no matter if it is positioned vertically, horizontally or an edge. Still, the si... |
16 January 2008
16:06 GMT |
 |
|
90 % of the information we get about our environment comes through our eyes. Humans are visual beings. But how light turns into visual sensations is hard to explain. A new research published in Neuroscience sheds light on how the human and primate retinas turn light into signals going to the brain. The team funded by... |
30 October 2007
08:08 GMT |
|
|
We, humans, have in our retina two types of photoreceptor cells: the cones for daylight vision and color vision, and the more sensitive rods for night vision. This is also the case with most mammals. But nocturnal bats were traditionally believed to have just rods. Bats are assigned to two evolutionary groups (which... |
16 June 2007
05:11 GMT |
|
|
Your jittery eyeballs enable you to notice the nasty pimples on the face of an attractive girl from a distance. The minute, involuntary movements of our eyes enable the brain to detect the smallest details of your looks, as found by a team at Boston University led by neuroscientist Michele Rucci. Animals with sharp t... |
14 June 2007
05:34 GMT |
|
|
Stem cells are planned ultimately for treating everything: from new hearts to new testicles. British researchers at the University of Sheffield are now trying to make new eyes. Not exactly eyes, but retinal tissues, a fact that would restore vision to many blind people. A handful of patients with age-related macular ... |
6 June 2007
06:37 GMT |
|
|
The retina is one of the most fragile tissues of our organisms. So fragile, that the projects of the bionic eyes try to eschew it. But this is the tissue where images are captured and sent as electrical signals to the brain and in fact, the cause of almost all types of blindness. In order to improve the diagnoses of ... |
7 May 2007
17:21 GMT |
|
|
The mineral zinc seems to play an important role in the development of a common type of blindness. Age-related macular degeneration (AMD) is the main cause of blindness among elderly people in the developed countries and scientists have discovered that high zinc levels in the eye's deposits signal AMD developmen... |
21 March 2007
04:26 GMT |
|
|
|
|
