Tag: "motor" at biology news
Cerebral navigation: How do nerve fibers know what direction to grow in?
... a new direction or halting its growth. In chicken motor
neurons whose ephexin1 was inactivated, the axons grew into the hind limb prematurely, indicating faulty axon guidance. "Understanding these pathways could help in understanding the process of nerve regeneration," says Greenberg, who is also Profess...
Brain-injury rehabilitation depends on acetylcholine circuitry
...in circuitry--called a "reorganization of cortical motor
representations"--to reestablish connections that ...l forebrain was associated with normal learning of motor
control. To determine whether this same system also played a role in rehabilitation from brain injur...
Royal Society study on adaptability of fish to warming oceans
...his suggests that monkeys might recognise matching motor
movements, but they do not understand the intentional aspects of the imitator's behaviour. Contact: Dr Annika Paukner, Department of Psychology, University of Stirling, STIRLING, FK9 4LA, United Kingdom Selective foraging of fungi by collembol...
New insight into Huntington's disease pathology
...athological cell-cell interactions are critical to motor
degeneration. "Thus, pathological cell-cell interactions may be a surprisingly common pathogenic mechanism warranting further studies in all neurodegenerative disorders," they wrote....
New insights into how Huntington's disease attacks the brain
...t the first set of mice demonstrated problems with motor
control and showed visible degeneration of the target brain cells. In contrast, the second set of mice showed little signs of the disease. "This is the first direct genetic evidence to demonstrate that abnormal interactions between cells can signifi...
Mosaic mouse technique offers a powerful new tool to study diseases and genetics
... of the brain whose main function is to coordinate motor
activity and maintain balance. The researchers used MADM to study the development of cerebellum granule cells, which are the most abundant cells in the brains of mice and humans. "Usually people think that all cerebellum granule cells are the same--...
Motor transport in bio-nano systems
...y of Amsterdam have now modelled and simulated the motor
traffic for different compartment geometries and f...eps along the filament. Each step corresponds to a motor
displacement of about 10 nanometers, comparable to the size of its legs. In one second, the motor
DFG to fund 14 new research training groups
...ge learning and comprehension, memory training and motor
control? To what extent are other areas of perception affected? These largely unexplored questions are addressed by the interdisciplinary Research Training Group "Function of Attention in Cognition", which is cooperating with Max Planck Institutes in...
Stem cell treatment improves mobility after spinal cord injury
...he therapeutic use of these cells can help restore motor
skills lost from acute spinal cord tissue damage. ...ter the initial injury, which led to a recovery of motor
skills. But the same treatment did not work on rats that had been injured for 10 months. The finding...
Newly identified enzyme group converts protein into cellular traffic signal
...em made of fibers called microtubules. Specialized motor
proteins slide along these fibers, carrying organe...aterials to the places they need to go. But how do motor
proteins know where to take their cargoes? The researchers identified a new enzyme group that attac...
PNAS highlights for the week of May 16 - 20
...death, reduced scar tissue formation, and improved motor
and cognitive recovery. Early History of Domesticated Plants from Mexico Cave Radiocarbon dating of specimens from Coxcatlan Cave in Mexico provides insight into the initial appearance of three domesticated plants in the country's Tehuacan Valley....
Organization for Human Brain Mapping's 11th Annual Meeting
...ng from research on neuroanatomy, emotion, memory, motor
behavior, perception, imaging, modeling, cognition, language to clinical research on brain disorders such as schizophrenia and Alzheimer's Disease. In addition to nearly 1600 poster presentations, four member-initiated symposia and six keynote lectu...
Managing maternal depression during pregnancy presents significant challenge to clinicians
...ssiness, irritability, inconsolability, diminished motor
tone and lethargy." Little is known about the consequences of fetal exposure to psychoactive drugs indeed, many other drugs as well while in utero. Because newborn behavior is shaped by countless variables, large controlled clinical studies are nee...
U of MN researchers discover novel way estrogen affects the brain
... well-documented actions of this hormone on female motor
control and pain sensation." Marissa Boulware, a University of Minnesota neuroscience graduate student who performed the studies states, "Every day post-menopausal women face the dilemma of taking estrogens to improve their cognitive abilities, know...
Brain may be less plastic than hoped
...ose an entire hemisphere during surgery can regain motor
control on the affected side of their body and go ...lt animals, neurons "filled in" blank spots in the motor
and visual cortex after these areas fell silent from lack of sensory input due to injury. This led t...
HHMI awards first Gilliam Graduate Fellowships
...d Surgeons, where she studied kinesin, a molecular motor
protein. Van Prooyen has completed her first year as a graduate student in biology at The Johns Hopkins University. Profiles and downloadable photos of the Gilliam Fellows are available in the HHMI online Press Room at http://www.hhmi.org/press/ . ...
Dartmouth Medical School researchers identify enzymatic activity of neurological disease gene
...al disorders, with the patients losing balance and motor
coordination in their hands and legs, and suffering from other symptoms such as controlling ocular movements. "As with many diseases for which genes were identified by positional cloning, one begins with insufficient information about the encoded pro...
Air pollution raises risk for dangerous arrhythmias among people with ICDs
...n, black carbon, nitrogen dioxide (all linked with motor
vehicle emissions) and sulfur dioxide (linked to power plants) were present. The finding suggests that air pollution provokes ventricular tachyarrhythmias among people with acutely predisposed conditions. The researchers calculated that the ICD patie...
Developing nervous system sculpted by opposing chemical messengers
...d cries in part because a network of nerves called motor
neurons carry signals from the infant's brain and ...ay issue of the journal Neuron, showed that as the motor
neurons grow from their home base in the spinal cord towards muscles throughout the body, they relea...
European funding for research on biomolecular nanomachines
...s in size. When in contact with a filament, such a motor
undergoes a certain conformational transformation, a so-called "power stroke", which enables the motor
to generate a pulling force. Because of its small size, a single nanomachine generates a rather smal...
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