sight

03/06/2014 - 12:07

People born unable to see are readily capable of learning to perceive the shape of the human body through soundscapes that translate images into sound, according to researchers who report their findings in the Cell Press journal Current Biology on March 6. With a little training, soundscapes representing the outlines and silhouettes of bodies cause the brain's visual cortex—and specifically an area dedicated in normally sighted people to processing body shapes—to light up with activity.

 

01/22/2012 - 23:10

The blind Mexican cavefish (Astyanax mexicanus) have not only lost their sight but have adapted to perpetual darkness by also losing their pigment (albinism) and having altered sleep patterns. New research published in BioMed Central’s open access journal BMC Evolutionary Biology shows that the cavefish are an example of convergent evolution, with several populations repeatedly, and independently, losing their sight and pigmentation.
 

12/16/2011 - 13:26

A transparent cornea is essential for vision, which is why the eye has evolved to nourish the cornea without blood vessels. But for millions of people around the world, diseases of the eye or trauma spur the growth of blood vessels and can cause blindness.

12/09/2011 - 19:22
Our senses of sight and hearing work closely together, perhaps more than people realize, a new UCLA psychology study shows.  The study appears in the December issue of Psychological Science, a journal published by the Association for Psychological Science.