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Science News Archive February 2013 - Page 13


Page 13 of 28

Strengthening speech networks to treat aphasia

Aphasia affects 80,000 people annually in the US, causing difficulty speaking and understanding language. Researchers at Brown University have developed a therapy to strengthen speech networks using guided speech and repetition exercises. Early testing with four patients showed improved precision and reduced errors.

When good habits go bad

Nicole Calakos studies synaptic defects in the basal ganglia that underlie compulsive behavior, including Huntington's and Parkinson's diseases. Mice with overactive metabotropic glutamate receptors exhibit impaired synaptic plasticity, leading to obsessive-like behaviors.

Brain prostheses create a sense of touch

Researchers at Duke University have developed a brain prosthetic that allows rats to sense infrared light as a tactile sensation, enabling them to navigate virtual environments and recognize textures. This breakthrough could lead to the development of neural prosthetics for quadriplegics to regain sensory perception.

Neuronal activity induces tau release from healthy neurons

Researchers discover that neuronal activity induces tau release from healthy neurons, suggesting a physiological process that can be regulated by neural activity. The study suggests that altered tau release may occur in response to changes in neuronal excitability in the Alzheimer's brain.

SourceEMBO·JournalEMBO Reports·DateFeb 15, 2013

Not your conventional nucleic acids

Researchers at Northwestern University develop spherical nucleic acids (SNAs) for biomedical applications, offering improved delivery and targeting of therapeutics. SNAs show promise in treating genetic diseases and neurological disorders, including glioblastoma and Alzheimer's disease.

Is there a Neanderthal in the house?

Researchers examine how our evolutionary history contributes to current health problems, such as obesity and childbirth complications. They suggest that understanding our past can help us better address these issues with alternative solutions like doula support during birth.

Can hospital readmission rates be trusted?

A recent study found that 25% of hospital readmissions for spine surgery patients were not due to true quality-of-care issues. Planned readmissions, unrelated surgeries, and rescheduled procedures were among the cases not counted against hospitals. The study suggests modifying the calculation method to make it more clinically relevant.

SourceLoyola Medicine·JournalJournal of Neurosurgery·DateFeb 15, 2013

Statistics help clear fog for better climate change picture

Researchers are using statistical approaches to analyze climate change risks, including the Atlantic Meridional Overturning Circulation. Bayesian statistics is a key tool in quantifying uncertainty and predicting future events. Collaboration between disciplines is essential for advancing climate science and risk management.