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Tag: "tuning" at biology news

Revolutionary nanotechnology illuminates brain cells at work

...d construct new drugs." "FRET is like two musical tuning forks, which have the same tone," Okumoto continued. "If you excite one, it gives a characteristic tone. If you bring the second fork close to the first one, it will also start to give you a tone even though they do not touch. This is resonance energ...

Brain Scans Reveal How Gene May Boost Schizophrenia Risk

...s, but it's amazing how well the data support this tuning model," said Berman. "The study is important for our understanding of schizophrenia because it clarifies the neural mechanism for a well-established risk gene." Also participating in the NIMH brain imaging study were: Dr. Daniel Weinberger, Philip K...

Team Invents Device For Weighing Individual Molecules

...anoelectromechanical resonators"--essentially tiny tuning forks about a micron in length and a hundred or so...ed on its size, shape, and composition, these tiny tuning forks ring at their own fundamental frequency of mechanical vibration, although at such a high pitch...

MicroRNA tweaks protein that controls early heart development

... believe microRNAs seek out and bind to mRNA, fine tuning the amount of protein that mRNAs manufacture. In some cases, microRNAs shut down protein production altogether. The UT Southwestern researchers discovered that a microRNA called miR-1 targets the mRNA of the gene Hand2, a key regulator of heart form...

New brain hormone puts brakes on reproduction

...ss regulation of the reproductive system, but fine tuning hasn't been well understood at all." GnIH was discovered five years ago in quail by Japanese researchers led by Kazuyoshi Tsutsui, a professor on the faculty of integrated arts and sciences at Hiroshima University. The discovery supplied one of the ...

Archerfish tune their shots to universal properties of prey adhesion

...environment that has been manipulated to make such tuning unnecessary for successful hunting. The findings suggest that the tuning aspect of the archerfish's hunting strategy is not as plastic in response to learning as might have ...

Nanoparticles can track cells deep within living organisms

...fluorine atoms in the particles can be detected by tuning an MRI scanner to the unique signal frequency emit...ompounds, injected and then detected separately by tuning the MRI scanner to each one's individual frequency, says Wickline. That makes the labeled cells ...

New sensor detects gaseous chemical weapon surrogates in 45 seconds

Using lasers and tuning forks, researchers at Pacific Northwest National L... Wojcik, a research scientist at PNNL. "The laser, tuning fork and other technology needed for QPAS are so simple, and yet robust, that further development is...

Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

...t made it possible to more directly probe neuronal tuning than in previous studies. Investigators found that cars activated a particular region in participants' brains, the lateral occipital cortex, which had also been found by other studies to be important for object recognition. Then the volunteers we...

Research finds music training 'tunes' human auditory system

...ction of the neocortex -- a person may actually be tuning the brainstem," says Kraus. "This suggests that the relationship between the brainstem and neocortex is a dynamic and reciprocal one and tells us that our basic sensory circuitry is more malleable than we previously thought." Overall, the finding...

Mimicking how the brain recognizes street scenes

...tes work in physiology labs that have measured the tuning properties of neurons throughout visual cortex. By necessity, most of those experiments are made with simplistic artificial stimuli, such as gratings, bars, and line drawings that bear little resemblance to real-world images. "We put together a syste...

Migration alert -- How tumor cells home in on the lymphatic system

...reinforced by the lymphatic’s own secretions, fine tuning the tumor cells’ migration and guaranteeing that they will home in on the lymphatic. To demonstrate this new concept, the researchers engineered a tissue culture model of the tumor-lymphatic microenvironment and developed computational models to...

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