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handedness in Medical News

Duke chemist has new way to tell right from left

...art, who developed the new technique with graduate student Daniel Lim." Though well-known to the pharmaceutical industry, this problem of molecular handedness in ketones has been difficult to solve. Academic labs have succeeded at asymmetric synthesis over the last two decades, but only by using extreme cond...

Poor spellers with good phonetic skills are more often right-handed

...ders (2.4%) than poor spellers without GFEs (24.4%). Differences for hand skill were as predicted. These findings support the right shift theory of handedness and cerebral dominance, which predicts that dyslexics with good phonology would be strongly right-handed says Marian Annett, corresponding author of t...

Results promising for computational quantum chemical methods for drug development

...s, some are left-handed and some are right-handed. Most drugs have this handedness property, Crawford said, and for many of these drugs, even though both hand... able to provide organic chemists with computational tools to determine the handedness of a particular molecule they are working with. He said that such tools cou...

Left handed have better episodic memory

...mber events better than they remember facts. As a result, the authors say that memory studies should factor in the familial and probably personal handedness of participants (having a weak versus strong hand preference may also matter). Further research may help explain why episodic memory benefits from the...
handedness in Biological News

Influence of sex and handedness on brain is similar in capuchin monkeys and humans

Hiram, Ohio, August 29, 2007 Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. New research now shows that just like humans, they display a fundamental sex difference in the organization of the brain, specifical...

Scientists give a hand(edness) to the search for alien life

... Many molecules not associated with life exhibit handedness as well. But when organisms reproduce, their offspring possess chiral molecules that have the same handedness as those in their parents bodies. As life spreads,.... Its hard to imagine a planets surface exhibiting handedness without the presence of self assembly, which is an...

NASA researchers find clues to a secret of life

... scientists looked for isovaline because it has the ability to preserve its handedness for billions of years, and it is extremely rarely used by life, so its pres...l also be left-handed. On the other hand, if there is a mechanism to choose handedness before life emerges, it is one less problem prebiotic chemistry has to solv...

Game of two halves leads to brain asymmetry

...sually in the same direction this helps to explain why there is consistent handedness between individuals. Nodal is known to also play a role in other areas of t... causal link between the asymmetry and schizophrenia. "The direction and handedness that brain asymmetry takes is not critical for survival, but the strong bia...

Snails and humans use same genes to tell right from left

...iologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar t...h he had never before worked with snails. Snail handedness becomes obvious very early in the embryo, Patel sa...own the maternal factors that ultimately determine handedness in snails. ...

Argonne scientists discover possible mechanism for creating 'handedness' in biological molecules

...great mysteries of the origin of life. Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered a way to induce this handedness in pre-biological molecules. "Understanding how the molecules necessary for life originated is one of the most basic scientific questions in bioche...

A gentle touch for better control, a quantum mechanical con, and milestone PRL papers

...ystems, and human social systems may respond to a gentle touch for the very same mathematical reasons. In order to test their hypothesis that heavy handedness can lead to loss of control, the researchers used optical tweezers to grab hold of floating microscopic beads. They then dragged the particles back an...

Mantis shrimp vision reveals new way that animals can see

... researchers presented the animals with two feeding tubes, one reflecting L-CPL and the other R-CPL. The stomatopods chose the tube reflecting the CPL handedness to which they had originally been trained at levels significantly above chance, the researchers found. Although its not yet clear exactly what the ...

ASU researcher may have discovered key to life before its origin on Earth

...RIZ. -- An important discovery has been made with respect to the mystery of handedness in biomolecules. Researchers led by Sandra Pizzarello, a research professor... abiotic precursors to the origin of life on Earth have been shown to carry handedness in a larger number than previously thought. The work is being published...

Films of Mitchell and Kenyon illuminate lefties' decline in Victorian England

... he was initially interested in geographical differences in the rate of handedness. In examining those patterns, he discovered that the differences in handedness between countries at one point in time also existed within a country over the course of time. "'The past is another country,' as they say," McManus sa...
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