New research explores 'early bird' and 'night owl' sleep patterns
...trum reflects the broad, normal variation in sleep patterns in humans that is rooted in the very genetic found...e presumption exists that the differences in sleep patterns are controlled by complex mechanisms with contributions from multiple genes and influenced by enviro...Brain cells become more discriminating when they work together
...ate between different orientations ofsimple visual patterns by synchronizing their electrical activity. The pa...ughts.) When the subjects were presented with grid patterns at different orientations, the researchers found that groups of about six neurons would synchronize ......time. Blocked kidneys showed disruptions in sodium patterns as well, and the team was able to identify sections of kidney that retained healthy functioning and could return to normal once the block was removed, as opposed to those that had permanent damage. While todays' methods give estim...Delirium high in ICU patients, leads to death, morbidity
...nterventions directed toward changing the practice patterns of physicians and nurses. "The next stage is to learn what percentage of patients with delirium can have the complications either prevented or treated in order to lessen morbidity and/or mortality associated with critical illness," he said. "That's ...Alcoholism risk linked to gene involved in brain chemistry
...risk for alcoholism and certain types of brainwave patterns that have been linked to alcoholics. Within that region are genes that make proteins enabling GABA to signal to nerve cells and so do its work in the brain. The researchers analyzed tiny differences in the sequences of the genes and determined that d...Young chimpanzees show sex differences in learning
...five fist widths). Daughters copied their mothers' patterns exactly. For example, if a mother inserted her too...ess time watching their mothers, and their fishing patterns were completely unrelated to their mothers'. Termite fishing qualifies as an aspect of chimpanzee c...Genetic screening study at Stanford ID's most aggressive adult leukemia strains
...ple. From this, the researchers found two distinct patterns of which genes were turned on or off. These patterns correlated with how long the intermediate-risk patients lived after diagnosis. Those in the first gr...Predicting cancer patient survival with gene expression data
...m with statistical analysis to look for additional patterns in the data to identify clinically relevant subsets of genes. In many retrospective studies, patient survival time is known, even though tumor subtypes are not; Bair and Tibshirani used that survival data to guide their analysis of the microarray dat...Researchers identify unifying code among diverse classes of natural antibiotics
...ture, which integrates inverse amino acid sequence patterns and a hallmark 3-dimensional motif. This multidimensional signature is conserved in disulfide-stabilized antimicrobial peptides across biological kingdoms, and transcends motifs previously limited to defined peptide subclasses. Illustrating the prom...Controlling biomolecules with magnetic 'tweezers'
...A. The device should help scientists study folding patterns and other biochemical details important in medical, forensic and other research areas. The new NIST device works like drawing toys that use a magnetized stylus to pick up and drag magnetic particles. Magnetic particles 2 to 3 micrometers across are s...UF study: Barren Siberia, of all places, may be original home to animal life
... on using fossil records to study the evolutionary patterns of early life in insects and crustaceans, especial...fore their extinction 250 million years ago. These patterns then pointed toward a likely continental breakup and drift scenario. Working independently, the UF ...Scientists question reports of massive ant supercolonies in California and Europe
...ites - short sequences of DNA that occur in unique patterns that are passed down from generation to generation...evelopment or behavior. But because microsatellite patterns are inherited, scientists use them as genetic markers to determine if individuals from different pop...Comprehensive study: We know little about environmental effects on kids
...ata from adults into data from children, but their patterns of exposure are different they are smaller, closer to the ground, and their organs are developing." Many assumptions take place when trying to evaluate the impact of chemicals and drugs on children, says John Benitez, M.D., managing director of the ...Water molecules clump more loosely than previously thought
..., a co-author of the research paper. The ephemeral patterns formed by bonding in the liquid are still far from being understood, but are thought to be responsible for the peculiar properties of water, including its relatively high boiling point, its high viscosity and - last but not least - its ability to sus......rgmann, a co-author of the research. The ephemeral patterns formed by bonding in the liquid are still far from being understood, but are thought to be responsible for the peculiar properties of water, including its relatively high boiling point, its high viscosity, and last, but not least its ability to sus...Modern analytic techniques use patterns of very small spots ofprotein, DNA or other biological molecules to screen for genes orproteins. Gang-yu Liu, associate professor of chemistry at UC Davis,and her colleagues have now made dots of protein hundreds of timessmaller than those in any com...Ferns diversified in shadow of flowering plants
...c about ecological interactions molding concurrent patterns of diversification in these two groups," said James Rodman, program director in NSF's division of environmental biology. The researchers based their findings on concurrent analyses of both the fossil record of plant species as well as genetic studies...Scientists compare rat genome with human, mouse
... called "syntenic blocks" distributed in varying patterns across the organisms' chromosomes. The sequence data also confirms that the rodent lineage split 12 to 24 million years ago into the separate lines that gave rise to the rat and to the mouse. Researchers estimate about 50 chromosomal rearrangements o...Bird's song may be linked to speech disorders
...Brain Research Institute. "The similar expression patterns suggest that songbirds can be studied to investigate neural mechanisms for vocal learning that may be parallel to those used by the human brain. "Our findings make it more likely that FoxP2 plays a critical role for learning speech and vocalization i......n is supported by the findings regarding placement patterns for introns within genes. It long has been observed that, in the sequences of nitrogen-containing compounds that make up our DNA genomes, introns prefer some sites more than others. The CARB study indicates that these preferences are side effects of ...