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Tag: "movements" at biology news

Two nerve cells in direct contact

...ly, this cell seems initially to react only to the movements in front of its own eye (ipsilateral), but remain blind to movements in front of the other eye (contralateral). However, if the ipsilateral movement stimuli are combined...

New technology to speed up research into Huntington's disease

...entation) together with the appearance of abnormal movements and impaired motor skills (such as unsteady gait and poor coordination). There is currently no cure and whilst some symptoms can be alleviated, no treatments have been developed that help with cognitive deficits, a distressing aspect of the disea...

Pheromone from mother's milk may rapidly promote learning in newborn mammals

...that newborn pups engage in typical food-searching movements in response to olfactory signals that include the mammary pheromone secreted in mother's milk. The ability of newborns to rapidly improve their milk-finding skills likely involves learning that "new" odors--for example, those from the mother's abdome...

Computer scientists unravel 'language of surgery'

...p of a robotic surgical device, which recorded the movements and made them available for computer analysis. ...is being performed well and also to identify which movements can lead to operating room problems. Just as a speech recognition program might call attention to po...

Embryonic patterning makes the feathers fly

...mber that enabled them to continually observe cell movements and track individual cells using fluorescent markers. The results were recorded in real time by time-lapse video microscopy. The resulting chicken feather movie resolved the question: the FGF/MAPK pathway acted through the mesenchyme. Analyses of...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...owed the researchers to investigate whether finger movements made by the experimenter's hand were able to facilitate the subject's own finger movements--this facilitation was measured by the ability of benign stimulation of a particular brain region to promote motor signals (corresponding to those finger movem...

Innovative movies show real-time immune-cell activity within tumors

...g tissues. The microscope tracked and recorded the movements in three dimensions over time of T cells in a transgenic mouse developed by Weninger and Ulrich von Andrian at Harvard Medical School in which the cells fluoresce green. In addition, for this study, tumor cells in the mice were engineered to fluoresc...

Asia's odd-ball antelope gets collared

...em. "The GPS collars will provide information on movements of saigas across this dazzling but arid landscape so that a more comprehensive conservation strategy can be developed to assure the persistence of this little known species" said WCS research scientist Kim Berger, a co-director of the study. Saigas s...

New biologic treatment for tennis elbow may replace surgery for chronic sufferers

...on of the tendon above the elbow that controls the movements of the wrist and hand. Treatments such as rest, nonsteroidal anti-inflammatory drugs, bracing, physical therapy, and injections of corticosteroids (cortisone shots) are often used but recent studies have called into question their efficacy. Those w...

Disappearing nest egg: Researcher studying declining numbers of macaws

...macaws and use satellite technology to track their movements and learn more about them. "We have some macaws here in captivity on campus at the Schubot Exotic Bird Center, but we have much to learn about them in their native habitat," he says. "We know that they tend to stay with one mate for a long time. ...

Electronic chip, interacting with the brain, modifies pathways for controlling movement

...tex, it produces long-lasting changes. Namely, the movements evoked from the recording site changed to resemble those evoked from the stimulation site. The researchers said that a likely explanation for these changes is the strengthening of pathways within the cortex from the recording to the stimulation sit...

Where we change our mind

...tatistical probabilistic analysis of the subjects' movements to overcome a major obstacle to such studies. That obstacle is that the beliefs of the subjects during the experiment could not be determined unequivocally; thus, those beliefs could not be correlated with brain function. However, the researchers' s...

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

...d an approximately 80 percent improvement in their movements and a significantly improved ability to retrieve food pellets. These effects lasted for at least 4 months after the treatment ended. "There was a profound behavioral effect of the treatment, even after it 'washed out' of the system," Dr. Eckman not...

Movie spies on malaria parasite's sneaky behavior

... But the power of using imaging to follow parasite movements inside live, infected animal hosts is clear. "It is now possible to follow in real time and quantitative terms the parasite in its host, and that is something we were only dreaming of a few years ago," said Ménard....

Stimulation of the semicircular canals can artificially control human walking and balance

...o investigate how the body's ability to sense head movements can contribute to balance control and guidance con...d to control walking and balance detect rotational movements of the head, not the direction of gravity. These findings therefore show that sensing movement is cr...

Himalayan forests disappearing

...xecutive" center plans behaviors not by specifying movements required for given actions, but rather the events ...uring the process of planning reflect the multiple movements required during future actions or the individual future events that occur as a result of the actions...

The brain's executive is an 'event planner'

...xecutive" center plans behaviors not by specifying movements required for given actions, but rather the events ...uring the process of planning reflect the multiple movements required during future actions or the individual future events that occur as a result of the actions...

Agriculture and tropical conservation: rethinking old ideas

...peasant farming practices encouraged by grassroots movements such as Brazil's Landless Workers Movement, Mexico... said, "I think conservationists and rural peasant movements ought to be friends." ...

A dichotomy in migration patterns found for sea turtles in east Atlantic

...ellite tracking of the adult turtles' geographical movements and diving patterns--show that the sexually mature adult population also includes oceanic animals and thereby reveal that adults in the eastern Atlantic occupy very different habitats and undertake two distinct foraging strategies. The differing st...

On the track of tiny larvae, a new model elucidates connections in marine ecology

...mals, including small larvae, in part because such movements facilitate normal biological connections among geo...oupled two types of models: One model predicts the movements of "virtual" coral larvae in the Caribbean Sea based on ocean currents, while the second model gives...

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