ScienceDaily: Top Health News

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• Roles, responsibilities of patient navigators defined
• Getting excited helps with performance anxiety more than trying to calm down, study finds
• Motor excitability predicts working memory
• Life expectancy increases among treated HIV-positive individuals in US, Canada
• Researcher to grow human cells in space to test treatment for stroke

Roles, responsibilities of patient navigators defined Posted: 23 Dec 2013 08:48 AM PST New research defines the roles and responsibilities of patient navigators. With the rapid growth of patient navigation, the paper seeks to develop a framework to describe similarities and differences across navigators and clarify their place in the health care system, leading to greater standardization of the profession.

Getting excited helps with performance anxiety more than trying to calm down, study finds Posted: 23 Dec 2013 05:39 AM PST People who tell themselves to get excited rather than trying to relax can improve their performance during anxiety-inducing activities such as public speaking and math tests, according to a new study.

Motor excitability predicts working memory Posted: 23 Dec 2013 05:38 AM PST Humans with a high motor excitability have a better working memory than humans with a low excitability. By measuring the motor excitability, conclusions can be drawn as to the general cortical excitability – as well as to cognitive performance. Working memory allows the temporary storage of information such as memorizing a phone number for a short period of time. Studies in animals have shown that working memory processes among others depend on the excitability of neurons in the prefrontal cortex.

Life expectancy increases among treated HIV-positive individuals in US, Canada Posted: 18 Dec 2013 02:11 PM PST A 20-year-old HIV-positive adult on antiretroviral therapy in the US or Canada may be expected to live into their early 70s, a life expectancy approaching that of the general population.

Researcher to grow human cells in space to test treatment for stroke Posted: 18 Dec 2013 11:36 AM PST A researcher believes that cells grown in the International Space Station (ISS) could help patients recover from a stroke, and that it may even be possible to generate human tissues and organs in space. He just needs a chance to demonstrate the possibility.

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