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Tag: "brains" at biology news

The lopsided brain: Attention bias is shared by humans and birds

...rds lack a corpus collosum, the structure in human brains that is thought to facilitate rapid communication between the two hemispheres. In the past, such communication via the corpus collosum has been thought to form the basis for asymmetries in human spatial attention, but the new observations suggest tha...

Brain May Be Less Plastic Than Hoped

...an Diego, says the latest data indicate that adult brains may be less plastic than scientists had hoped. In... due to injury. This led to speculation that adult brains could compensate for permanent damage to the eyes, ears, skin, or even to itself. In the case of dam...

Bee mites suppress bee immunity, open door for viruses and bacteria

...rcent the same as deformed wing, appears in in the brains of aggressive guard bees," says Cox-Foster. "Guard bees that are aggressive better protect the hive, so there may be some positive effect in this virus that allows it to persist in a colony." The combination of bee mite infestation and deformed wing...

U. Iowa researchers improve Huntington's disease symptoms in mice

...a RNA interference molecule were injected into the brains of genetically engineered mice before the disease symptoms appeared. The treated mice showed nearly normal movement, and the characteristic neurological damage also was significantly improved in comparison to untreated mice. Detailed examination of ...

Mice brains shrink during winter, impairing some learning and memory

The brains of one species of mouse actually shrink during the...al changes in the structure and the functioning of brains of mammals, said Randy Nelson, co-author of the study and professor of psychology and neuroscience a...

Brain Scan Study of Smokers Reveals Signature of Craving

...om smoking and after smoking as usual. While their brains were scanned, smokers saw smoking-related pictures... cigarettes. The researchers scanned the subjects' brains using functional magnetic resonance imaging, in which harmless magnetic fields and radio waves are u...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...le cells, which are the most abundant cells in the brains of mice and humans. "Usually people think that all cerebellum granule cells are the same--they are born, and their final function is determined by their interaction with other neurons," Luo says. "But we found that there appears to be a certain degr...

Speak up: Louder neurons form more connections

...ors. Although this work specifically examined the brains of fish, Smith said the same rules likely apply to all neurons, including those in the human brain. “Probably these same things are happening all the time,?he said. Neurons that fire regularly while learning to recognize a new person’s face, for exa...

Confirmation of human protein interaction data by human expression data

...ors. Although this work specifically examined the brains of fish, Smith said the same rules likely apply to all neurons, including those in the human brain. “Probably these same things are happening all the time,?he said. Neurons that fire regularly while learning to recognize a new person’s face, for exa...

Using nanoparticles, in vivo gene therapy activates brain stem cells

...s have for the first time delivered genes into the brains of living mice with an efficiency that is similar to, or better than, viral vectors and with no observable toxic effect, according to a paper published this week in Proceedings of the National Academy of Sciences. The paper describes how the UB scie...

Study shows humans have ability to track odors, much like bloodhounds

... and functional magnetic resonance images of their brains showed that the brain is set up to pay attention to the difference between what the left and right nostrils sense, much the way it can localize sounds by contrasting input from the ears. "It has been very controversial whether humans can do egocentr...

Scripps research scientists identify infertility molecule

... that can be found on the surfaces of cells in the brains and in the uteruses of mammals, where it binds to LPA, one type of phospholipid. Phospholipids, molecules of fat with a charged head on one end, are commonly found in biological organisms and are generally regarded as essential structural components...

Bees, Brains and Addiction

...archers at UCSD have turned to bees. Granted, the brains of humans and bees don't look much alike. But how ...about the workings of the primitive portion of our brains that lead some of us to become addicted to tobacco, alcohol or other drugs. This region of the brai...

Scientists discover that three molecules may be developed into new Alzheimer's drugs

...led "tau," which becomes hopelessly tangled in the brains of patients with Alzheimer's. The finding is promising news for the development of drugs for the disease. Ken Kosik, co-director of the Neuroscience Research Institute at the University of California, Santa Barbara, headed the effort to find these m...

Scientists at Galileo Pharmaceuticals confirm inflammatory response linked to glucose levels

...led "tau," which becomes hopelessly tangled in the brains of patients with Alzheimer's. The finding is promising news for the development of drugs for the disease. Ken Kosik, co-director of the Neuroscience Research Institute at the University of California, Santa Barbara, headed the effort to find these m...

Microscopic brain imaging in the palm of your hand

...t can capture micron-scale images from deep in the brains of live subjects. The method, called two-photon mi...e blood vessels in the hippocampus sections of the brains of live mice. The mice were injected with a fluorescein dye ?an FDA-approved contrast agent that is ...

Divergent life history shapes gene expression in brains of salmon

...genes we studied were expressed differently in the brains of sneakers and other male salmon came as a surpri... memory would be expressed at higher levels in the brains of sneakers. It's not yet clear why disparities like this would arise." Aubin-Horth says it is impo...

Thinking the pain away? Study shows the brain's painkillers may cause 'placebo effect'

...he injection was made while they were having their brains scanned by a positron emission tomography (PET) scanner. During one scan, they were told they would receive a medicine (in fact, a placebo) that might relieve pain. Every 15 seconds during the scans, they were asked to rate the intensity of their pa...

Endocannabinoids ?the brain's cannabis ?demonstrate novel modes of action to stress

... acts like substances that are produced inside our brains that are messengers between brain cells. Our work involves trying to understand what these substances, endocannabinoids, are for." She said they are particularly interested in how endocannabinoids influence oxytocin cells in the brain, because becau...

'Jumping genes' contribute to the uniqueness of individual brains

... of these jumps occur, they could allow individual brains to develop in distinctly different ways. "This mobility adds an element of variety and flexibility to neurons in a real Darwinian sense of randomness and selection," says Fred H. Gage, Professor and co-head of the Laboratory of Genetics at the Salk ...

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