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Why some people resist authority

Control aversion — the urge to rebel against control over one’s decisions — can be explained by connectivity between two regions of the brain as well as behavioral measures of distrust and lack of understanding.

New hope for patients with depression and anxiety

There is a strong link between depression and anxiety disorders and autoimmune thyroiditis (AIT), a chronic thyroid condition affecting approximately 10 percent of the population. Scientists have now demonstrated that special treatment could help many …

Where hominid brains are concerned, size doesn’t matter

Researchers pieced together traces of Homo naledi’s brain shape from an extraordinary collection of skull fragments and partial crania, from at least five adult individuals. One of these bore a very clear imprint of the convolutions on the surface of t…

How the brain decides to make an effort

From deciding to quit hitting the snooze button and get out of bed in the morning to opting to switch off the TV and prepare for sleep at night, the mind weighs the costs versus benefits of each choice we make. A new study reveals the mechanics of how …

Biologists ‘transfer’ a memory through RNA injection

Biologists report they have transferred a memory from one marine snail to another, creating an artificial memory, by injecting RNA from one to another. This research could lead to new ways to treat traumatic memories with RNA — perhaps a traumatic mem…

Revealed: Why drug users prefer heroin at home, but cocaine while out

New research shows that response of brain and emotions to addictive drugs depends on both the setting and the substance of use. The findings could change treatments for drug users to help prevent relapses.

Discovery of differences in the brains of rats classified as workers vs. slackers

Neurologists have uncovered a network of regions in the brain that are involved in determining the choice of being a ‘hard-worker’ or a ‘slacker.’ Understanding how the brain makes such decisions is one of the most fundamental questions in neuroscience…

Details of brain networks in autism

A new study analyzing more than 1,000 brain scans reveals surprising new insights into brain networks in people with autism, after applying a new personalized approach to brain mapping. The new approach provides a way to examine the location of individ…

Gene variant may increase psychiatric risk after traumatic brain injury

A gene variant known to predict Alzheimer’s risk was linked to worse psychiatric symptoms in those with a traumatic brain injury. Study participants with the gene variant and at least one TBI had more severe PTSD, anxiety, and depression, compared with…

Brain size mediates the association between height and cognitive ability

Several studies have found that height and general cognitive ability, or intelligence, are positively associated. A recent study reveals a biological factor underlying this relationship: the size of the cerebral cortex.