Tag: "visual" at biology news
Atlas of Science Literacy completes mapping of science-learning pathways
...Benchmarks for Science Literacy . By providing a visual
display of the Benchmarks learning goals, Roseman noted, "Its much easier for teachers and others to see the rich relationships among ideas. The Atlas maps emphasize the importance of these connections and how they contribute to students science li...
Clinical trial for diabetic macular edema
...which showed the ability of ranibizumab to improve visual
acuity in patients with diabetic macular edema. V...ssessed using a reading chart, and median and mean visual
acuity improved by 11 and 12.3 letters respectively at 7 months. This corresponds to the ability to ...
Genetic studies endow mice with new color vision
...he genetically altered mice demonstrated their new visual
ability by choosing the correct panel in 80 percent of the trials. By contrast, normal mice only chose correctly one third of the time, the score that one would obtain by guessing randomly among the three panels. According to the scientists, their f...
Making mice with enhanced color vision
...s are unique among mammals in that they have three visual
receptors that absorb short (blue), medium (green)...al question was whether the mice could use the new visual
information. To address this question, the researchers used a classic preference test; mice set b...
Prefrontal cortex loses neurons during adolescence
...lt female rats had fewer neurons than males in the visual
cortex, a brain region associated with perception. But no other studies have looked for sex differences in the number of neurons in the prefrontal cortex. It is unclear whether sex differences seen in the rat PFC also occur in humans, Juraska said....
Stealth camouflage at night
...he research sheds light on the animal's remarkable visual
system and nighttime predator/prey interactions. ... in the science world. "The scarcity of studies on visual
predator/prey interactions at night constitutes a major gap in sensory and behavioral ecology," he s...
NAS announces Virtual Symposium on Visual Culture and Bioscience
...e world will discuss the intersections between the visual
arts and the life sciences at this international e...isualcultureandbioscience.org . Suzanne Anker, a visual
artist and theorist working with genetic imagery, will moderate the discussion. She is the co-author...
Tracking sperm whales and jumbo squid
...evels are extremely low, the squids reaction time, visual
acuity and swimming speed may be significantly impaired because of an inadequate supply of oxygena condition known as hypoxia. "Squid need a constant supply of oxygen to support their metabolism," Davis added. "Sperm whales, on the other hand, take...
Transport interrupted -- Texas A&M biologists trace cause of early blindness to tissue defect
...nd cone cells that allow organisms to detect their visual
worldsin zebrafish, a vertebrate whose eye physiology is essentially identical to that of a human. Recently he became intrigued by a 30-year-old debate involving photoreceptor deathspecifically, whether it was a cause or an effectin choroideremia, an...
News tips from the Journal of Neuroscience
...ts receptor TrkB contributes to the development of visual
pathways. Marshak et al. made use of the alternatively spliced TrkB.T1, which lacks the intracellular kinase domain and thus can act as a dominant-negative inhibitor of TrkB signaling. The authors overexpressed a green fluorescent protein (GFP)TrkB1....
Out-of-body experiences may be caused by arousal system disturbances in brain
...ause a condition of temporary paralysis along with visual
or auditory hallucinations immediately after waking up or before falling asleep due to an ill-timed disconnection between the brain and the body. Although it was once considered very rare, about 25 percent of all people have probably experienced slee...
UC Davis researchers discover key to body's ability to detect subtle temperature changes
...ical signals that can be decoded by the brain into visual
information. But how the human body is able to sense a one-degree change in temperature has remained a mystery. "For a long time, we didnt know how temperature sensing was being carried out in animals," said Jie Zheng, assistant professor in the D...
CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes
...eef released by the CSIRO shows for the first time visual
confirmation of the theory that sediment plumes travel to the outer reef, and beyond. The remotely sensed images, taken from February 9 to 13 this year, challenge conventional thought that sediment travelling from our river systems into the GBR is ...
How do marine turtles return to the same beach to lay their eggs?
... cross several hundred kilometers of ocean with no visual
landmarks. How do they manage to return to the same spot? A study by Simon Benhamou of the Center for Functional and Evolutionary Ecology at Montpellier1, France, together with other groups (CNRS, IRD, IFREMER, CEDTM2, University of Pisa), shows that...
Eye movement tasks can be used to assess fetal alcohol spectrum disorders
...cade) a stimulus that appeared in their peripheral visual
field. Researchers measured reaction times, direc...ovement both towards and away from the peripheral visual
target," said Reynolds. "FASD children also made a greater number of direction errors, even in the ...
Lizards 'shout' against a noisy background
Lizards that signal to rivals with a visual
display "shout" to get their point across, UC Davis researchers have found. Male anole lizards signal ownership of their territory by sitting up on a tree trunk, bobbing their heads up and down and extending a colorful throat pouch. They can spot a...
New research finds people and pigeons see eye to eye
DURHAM, N.H. Pigeons and humans use similar visual
cues to identify objects, a finding that could hav...ound that humans and pigeons, which have different visual
systems, have evolved to use similar techniques and information to recognize objects. Understandin...
News tips from the Journal of Neuroscience
... magnetic resonance imaging in macaques to examine visual
modulation of auditory receptive fields. The autho...auditory stimuli, but some areas responded just to visual
stimuli. Combined auditory and visual
stimuli produced enhanced responses particularly in caudal fie...
Sense and sensibility in short-term memory
...revious studies that tried to compare auditory and visual
memory did little or nothing to put the stimuli th...ine memory for studied lists of either auditory or visual
items," said Sekuler. The study used computer-generated visual
images and sounds to test auditory...
Computer program bridges gap between scientists, water policy makers
...stand each other. WaterSim developers created a visual
interface that allows users to simultaneously view maps, graphs and numerical data that reflect a variety of regional environmental and policy conditions. As users manipulate those conditions, they can see how those decisions would affect water avail...
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