Word: fmri
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...past few years have scientists been able to use imaging technology to look inside men's and women's heads to investigate whether those stereotypical gender differences have roots in the brain. No concrete results have emerged from these studies yet, but now a new functional magnetic resonance imaging (fMRI) study of children offers at least one explanation for some common tween social behaviors: girls are hardwired to care about one-on-one relationships with their BFFs (best friends forever), while the brains of boys are more attuned to group dynamics and competition with other boys...
...appointed day, the study volunteers were once again brought into the NIMH lab. This time, researchers monitored the kids' brain activity using fMRI while showing them the same pictures. The participants were asked to guess which of the kids in the pictures (the same kids they had rated - and who, they believed, knew those ratings) would like to interact with them...
...these feelings take time to bubble up. Researchers used functional magnetic resonance imaging (fMRI) to track the brain activity of 13 subjects as they listened to different stories, each evoking a strong emotional reaction: compassion for physical pain, admiration of physical skill, compassion for emotional strife and admiration for moral strength. The volunteers reported feeling overwhelmed by their emotions during the course of the experiment - which researchers verified by monitoring participants' heart and respiration rates. And the brain scans showed that while volunteers' recognition of another person's physical pain or skill was immediate, feelings like compassion and admiration took...
...differences, though he suspects hormones may play a significant role. He did get a better sense of the areas of the brain those hormones affect most, owing to the fact that he used a long-running PET scan rather than a shorter session with a functional magnetic resonance imager (fMRI), which is how such studies are usually conducted. This afforded him a good look at the amygdala, the deepest and most primitive of the brain structures involved. When the amygdala acts up, it's exceedingly hard to bring it to heel, as anyone suffering from anxiety conditions like phobias...
...teenager off the couch and working on that all important college essay? You might blame it on their immature nucleus accumbens, a region in the frontal cortex that directs motivation to seek rewards. James Bjork at the National Institute on Alcohol Abuse and Alcoholism has been using fMRI to study motivation in a challenging gambling game. He found that teenagers have less activity in this region than adults do. "If adolescents have a motivational deficit, it may mean that they are prone to engaging in behaviors that have either a really high excitement factor or a really low effort factor...