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Tag: "synchronized" at biology news

After a time-shift, mixed signals from the circadian clock

...as the suprachiasmatic nucleus (SCN). The clock is synchronized to environmental cycles of light and dark. It is w...rope, the ventral part of the clock is immediately synchronized to the new light schedule, but the dorsal part of the clock requires several days to adjust. This re...

Discovery clarifies role of peptide in biological clock

... nucleus (SCN), keep 24-hour time and are normally synchronized as a well-oiled marching band coming onto the field at half time. Herzog and graduate student, Sara Aton, found that mice lacking the gene that makes VIP or lacking the receptor molecule for VIP suffer from internal de-synchrony. When they recorded t...

Researchers reveal secrets of flying snakes

...mmetry, Socha used 3-D flight information from the synchronized recordings of two video cameras to digitally reconstruct the trajectories, speed and body postures of Chrysopelea paradisi, or paradise tree snake, and Chrysopelea ornata, golden tree snake. In this study, Socha, who also is a biologist at Argonne N...

Say what? Bacterial conversation stoppers

...bers and to get the population to act in unison. A synchronized group of bacteria can mimic the power of a multi-cellular organism, ready to face challenges too daunting for an individual microbe going it alone. Swelling populations trigger their quorum-sensing apparatuses, which have different effects in differe...

How fish hear and make sounds at same time

...n signals vocal muscles to make sound, a number of synchronized actions take place. The ear and brain are cued to the exact timing of a self-generated sound, distinguishing it from outside sounds. Just prior to a voicing, the brain warns the ear it should become less sensitive. When analyzed closely, the vocaliz...

Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

...dings show that an odor produces a memory trace of synchronized neural activity that lasts several minutes after a bee initially senses it," said Galán. "This is the first time anyone has revealed a short-term, stimulus-specific neural pulse within the living brain that occurs after exposure to a previously unkno...

Olfactory system detects pheromones that control reproduction

...that women who live in close quarters tend to have synchronized menstrual cycles. But it was also believed that humans would need a functional vomeronasal organ in order to sense pheromones -- and there is no evidence for such an organ in humans. "But now that we have identified an olfactory circuit that plays a...

Sooner is better with cochlear implants, Stanford scientist shows

...io recording of a single syllable while watching a synchronized video of a speaker's face mouthing a different syllable, in some cases a third syllable is heard, due to the brain's fusion of non-matching audio and visual information. It's an unnatural situation that a person wouldn't normally encounter, but it si...

Clock molecule's sensitivity to lithium sheds light on bipolar disorder

...the gears of the clock, to allow them to turn in a synchronized manner," says Lazar. Lithium blocks this action of GSK3, tagging Rev-erb for destruction, which leads to activation of clock genes such as bmal1. "We suggest that just as our cells in the incubator need to have their internal clocks reset, maybe thi...

Paying attention sets off symphony of cell synchronization

...the timing of brain activity became more precisely synchronized with the flickering," said Satoru Suzuki, associate professor of psychology at Northwestern and co-author of the study. The results suggest that attention can make a stimulus stand out by making brain responses to the stimulus more coherent. "This...

Theory of oscillations may explain biological mysteries

...eak coupling between oscillating systems can yield synchronized oscillations, a phenomenon that was studied with pendulums by the seventeenth century Dutch mathematician Christiaan Huygens. Biologists have only in recent years started to explore the implications for their subject. But it is already clear that cou...

Biologically inspired sensors can augment sonar, vision system in submarines

... In fish, the lateral line provides guidance for synchronized swimming, predator and obstacle avoidance, and prey detection and tracking. Equipped with an artificial lateral line, a submarine or underwater robot could similarly detect and track moving underwater targets, and avoid collisions with moving or stat...

Penn study on olfactory nerve cells shows why we smell better when we sniff

... to smell something, and why our sense of smell is synchronized with inhaling. "The driving force for such synchronization remained a mystery for more than 50 years," says senior author Minghong Ma, PhD, Assistant Professor of Neuroscience. "These results help us understand how the mammalian olfactory system ...

Research finds that circadian rhythms dominate all life functions

...g of the rhythms from each group of genes that are synchronized is important." Ptitsyn also discovered alternati...nmental factors, groups of genes can function in a synchronized manner, shifting in time against each other and working in what resembles a domino effect. Howeve...

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