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Tag: "movements" at biology news

New approach to vaccine development provides potent, long-lasting immunity

...r time and error explains why repetition of simple movements day after day is used routinely in rehabilitating partially paralyzed stroke patients and those with other brain injuries. To test the need for time in mastering muscle control, the research team designed a simple and short task. Fourteen healthy hu...

Robotic joystick reveals how brain controls movement

...r time and error explains why repetition of simple movements day after day is used routinely in rehabilitating partially paralyzed stroke patients and those with other brain injuries. To test the need for time in mastering muscle control, the research team designed a simple and short task. Fourteen healthy hu...

Creating a window on 'oceans in motion'

...ering North America-based programs that follow the movements of important species using electronic tags. Convening at Dalhousie University, Halifax, the experts will announce a global collaboration, the Ocean Tracking Network, whose goal is to tag a vast range of ocean animals large and small with low-cost de...

How low can you go? Ants learn to limbo

...ordings from the side. They then tracked the ants' movements and did a kinematic analysis of the results. ...

Study fishes out new role for prostaglandins

...prostaglandins help choreograph the intricate cell movements during early embryonic development in zebrafish, h...rough the EP4 receptor regulates the speed of cell movements during gastrulation. The sluggish cell movements could have profound implications for development. ...

Underwater listening devices yield discoveries about endangered large whales

...rwater sounds provides a valuable way to track the movements of endangered large whales. Autonomous data-recor...o sound) have added to scientific knowledge of the movements and calling behavior of these marine mammals. The findings have been particularly important in parts...

'Shuttling' protein possibly key to resilience of cancer cells

...c-Jun-ATF2 heterodimers and discover the shuttling movements of ATF2. The ATF2 protein also has been found in the cytoplasm of diseased brain cells in Alzheimer's disease and muscle cells in the heart, suggesting the same shuttling mechanism might be involved in those conditions. "These findings suggest a new...

UF scientists trace origin of shark's electric sense

...s." Dye tests are a classical way of mapping cell movements during development, and have been used to explore the origins of limbs and brain cells. In the current research, scientists used genetic markers to trace neural crest cells. "Dye labeling would be interesting and further test the idea that electrore...

Salk researchers make fast strides towards understanding how our body controls walking

...ding the neural circuitry that coordinates walking movements - one of the main obstacles in developing new treatments for spinal cord injuries. "Knowing which circuits are important and understanding how they control the essential aspects of walking should put us in a better position to design treatments or i...

Major WHO study concludes calcium supplements can reduce complications during pregnancy

...flap motions, especially at the tips. These larger movements seem to make it more difficult for the current drugs to function, since they must force the flaps to close and remain closed in order to prevent the enzyme from working. It probably takes more energy for the drugs to close the more mobile flaps of th...

Computer simulation hints at new HIV drug target

...flap motions, especially at the tips. These larger movements seem to make it more difficult for the current drugs to function, since they must force the flaps to close and remain closed in order to prevent the enzyme from working. It probably takes more energy for the drugs to close the more mobile flaps of th...

UC Riverside psychologist explores human perception, finds 'wow factor'

... speech -- not just from lips, but from the simple movements of dots placed on lips, teeth and tongue. They can also recognize people's voices just from seeing their faces, and vice versa, and seem to be able to distinguish among a variety of rooms on campus just from their echoes. "We get people ready for a...

New analysis shows three human migrations out of Africa

...on said. "That makes the timing very amenable for movements of large populations through the area. " Templeton said that the fossil record indicates a significant change in brain size for modern humans at 700,000 years ago as well as the adaptation and expansion of a new stone tool culture first found in Af...

First demonstration of 'teaching' in non-human animals

...oceed. The researchers' detailed analysis of the movements of tandem leaders and tandem followers shows the mutual feedback between them: if the gap between them gets too large, the leader decelerates and the follower accelerates, and if the gap between them gets too small, the leader accelerates and the fol...

Polymer aids in blood clotting, pointing way to new treatment

...etect muscle-like motors that operate a variety of movements within cells, said Arthur Kornberg, who won the 1959 Nobel Prize in Medicine or Physiology for discovering mechanisms in the synthesis of ribonucleic acid and deoxyribonucleic acid. "Roberto has discovered a novel structure of major metabolic import...

Penguins waddle but they don't fall down, UH researchers say

... use the waddling motion in a way that makes their movements more efficient, adjusting for the limitations of the size of their legs and their weight. Humans, on the other hand, have not developed such a mechanism to adjust for such dramatic side-to-side motion. So, if we simply waddle, chances are we'll fal...

How the octopus forms an elbow

...e octopus is able to generate a vast repertoire of movements that is unmatched by the human arm. Nonetheless, d...re able to form joint-like structures, and how the movements of these joints are controlled. The new findings, which appear in the April 18th issue of Current B...

Movement of chromosome in nucleus visualized

...ctive mechanism for directed long-range chromosome movements that depend directly or indirectly on actin and myosin." Other authors include graduate students Anne Carpenter at UIUC, currently at a post-doctoral fellow at M.I.T., and Beata Fuchsova and Terezina Johnson at UIC. ...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...e to an innate "life detector" tuned to the visual movements of an approaching predator's feet, says Queen's University psychologist Niko Troje. "We believe this visual filter is used to signal the presence of animals that are propelled by the motion of their feet and the force of gravity," suggests Dr. Troj...

Cheaper and simpler keyhole surgery

...a freedom of movement, transmit the surgeon's hand movements exactly onto the instruments. This is achieved using rods, cables and parallelogram constructions. This mechanical manipulator thus fulfils a similar function to the surgical robot systems, but in a simpler and cheaper manner. In a test carried out...

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