the latest news from Psychology sites
Mon, 29 Aug 2016 Use it or lose it: Stopping exercise decreases brain blood flow
Researchers examined cerebral blood flow in master athletes (ages 50-80 years) before and after a 10-day period during which they stopped all exercise. Using MRI brain imaging techniques, they found a significant decrease in blood flow to several brain regions important for cognitive health, including the hippocampus, after they stopped their exercise routines.
Mon, 29 Aug 2016 Alzheimer's: Nicotinic receptors as a new therapeutic target
Studies have indicated that nicotine may be beneficial for memory function. Scientists are set out to shed further light on the properties attributed to nicotine by determining the precise structure of the nicotinic receptors in the hippocampus region of the brain. Using mouse models for Alzheimer's disease, they identified the a subunit of the nicotinic receptor as a target that, if blocked, prevents the memory loss associated with Alzheimer's.
Mon, 29 Aug 2016 Patients with moderate to severe TBI twice as likely to die from an unintentional injury
Research examining adults with moderate to severe TBI who participated in rehabilitation showed that they were twice as likely to die from an unintentional injury that occurred following their TBI. This was in comparison to individuals in rehabilitation of similar age, sex, and race but without TBI. People who have had a moderate to severe TBI may experience changes in cognition and balance, which may put them at greater risk of subsequent unintentional injuries.
Mon, 29 Aug 2016 The brain performs feats of math to make sense of the world
Researchers have found that the brain is quite good at rapidly and subconsciously calculating the likelihood of various events, and remain flexible enough to account for new information. They traced these abilities to a region of the brain located just behind our eyes known as the orbitofrontal cortex.
Skin cells derived from autistic donors grew faster than those from control subjects, and activated their genes in distinct patterns, scientists report. Genes related to cell growth were unusually active, leading to more cells but fewer connections between them. This can cause faulty cell networks unable to properly transmit signals in the brain and enlarged heads during early development, say the researchers.
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