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Latest Color vision Stories

Bulging Eyes Of The Tarsier Provide Insight Into Evolution Of Human Vision
2013-03-28 09:58:14

April Flowers for redOrbit.com - Your Universe Online A new study, led by Dartmouth College, suggests that primates developed highly accurate, three-color vision that allowed them to shift to daytime living after eons of wandering in the dark. The findings, published in the journal Proceedings of the Royal Society B: Biological Sciences, challenge the prevailing theory that trichromatic color vision, a hallmark event in primate evolution, evolved only after primates became diurnal....

2013-02-11 10:54:37

Ultraviolet vision evolved at least eight times in birds from a common violet sensitive ancestor finds a study published in BioMed Central's open access journal BMC Evolutionary Biology. All of these are due to single nucleotide changes in the DNA. Modern daytime birds either have violet sensitive or ultraviolet sensitive vision. Being ultraviolet sensitive alters visual cues used to select a mate, avoiding predators, and in finding food. Researchers from Uppsala University and the Swedish...

Evidence Found To Support Nocturnal Bottleneck Theory
2012-11-01 09:33:36

April Flowers for redOrbit.com - Your Universe Online Most species of diurnal mammals have retained the imprint of nocturnal life in their eye structures since the age of dinosaurs. According to a new study from The University of Texas at Austin and Midwestern University, anthropoid primates - including humans, monkeys and apes - are the only groups that deviate from this pattern. This study is the first to provide a large-scale body of evidence for the "nocturnal bottleneck theory,"...

Color Blindness Linked To Eye Cells Not Brain
2012-09-20 15:52:25

Alan McStravick for redOrbit.com - Your Universe Online Over the past few years, several advances have been made in the field of ocular health.  Much of the research in color vision deficiencies has been conducted in Australia by researchers at The Vision Centre and The University of Sydney. Only a few months back, a major leap forward was achieved in the area of cortical color blindness caused by a traumatic brain injury. That study, like most others, focused on searching the...

Deep Sea Creatures Produce And Interact With Light Like Never Seen Before
2012-09-06 13:20:09

Brett Smith for redOrbit.com - Your Universe Online A team of American scientists has literally shed new light on the activities of creatures living half-a-mile below the ocean surface. The oceanographers led by Duke University found that some crustaceans living on the sea floor can see ultraviolet light even though thousands of feet of water prevent them from ever being exposed to it. They also found a wide range of creatures, from plankton to fish, living deep in the ocean that are...

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2012-09-04 19:01:38

Lee Rannals for redOrbit.com — Your Universe Online Scientists have finally confirmed what most have already known for generations and generations, men and women see things differently. Scientists reported in the journal Biology of Sex Differences that men have greater sensitivity to fine detail and rapidly moving stimuli, but women are better at discriminating between colors. Researchers from Brooklyn and Hunter Colleges of the City University of New York compared the vision...

2012-05-04 23:02:57

The breakthrough genetic test designed to meet FAA and US Air Force requirements is set for release at the Aerospace Medical Association in May. Albuquerque, NM (PRWEB) May 04, 2012 Genevolve Vision Diagnostics is launching its military grade genetic test for all major forms of congenital color blindness at the Aerospace Medical Association annual event May 13th-15th in Atlanta, Georgia. It is the first totally objective color vision test that can consistently separate colorblind...

2011-04-04 08:05:21

(Ivanhoe Newswire) "“ Turns out our sensitivity to seeing in color is not only due to cone cells in the retina, but also through the thyroid gland by controlling which visual pigment is produced in the cones. Research conducted on mice and rats has revealed that the production of visual pigment present in mature cones is regulated by the thyroid hormone. The team of researchers at the Max Planck Institute for Brain Research in Frankfurt/M., along with colleagues at the University of...

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2011-01-18 14:20:00

According to a laboratory study published on Tuesday, sharks may be unable to distinguish between colors, which could benefit swimmers, fishermen and sharks themselves. Australian researchers looked at the retinal cells of 17 shark species caught off Queensland and Western Australia. They found that the most common kind of light receptors were "rod" cells, which are highly sensitive to light and allow night vision but cannot tell colors apart. However, the sharks lacked cone cells, which...

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2010-12-10 10:25:48

Contrary to the recently established theory that marsupials have excellent color vision, research has shown that the wallaby is a rare exception. The research team, led by Dr Jan Hemmi from the ARC Centre of Excellence in Vision Science and The Australian National University, has shown that Tammar wallabies are much weaker in discriminating different colors because they are missing one type of visual pigment cell. "Dr Ebeling has demonstrated that wallabies do not have the complete set of...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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