Archive for December 2008
Impact of poverty on brain development comparable to stroke, study finds
In a study recently accepted for publication in the Journal of Cognitive Neuroscience, scientists at UC Berkeley’s Helen Wills Neuroscience Institute and the School of Public Health report that normal 9- and 10-year-olds differing only in socioeconomic status have detectable differences in the response of their prefrontal cortex, the part of the brain that is critical for problem solving and creativity.
“Kids from lower socioeconomic levels show brain physiology patterns similar to someone who actually had damage in the frontal lobe as an adult,” said Robert Knight, director of the institute and a UC Berkeley professor of psychology. “We found that kids are more likely to have a low response if they have low socioeconomic status, though not everyone who is poor has low frontal lobe response.”
Are some brains ‘wired’ to seek out new experiences?
People who welcome new experiences have stronger connections between their memory and reward brain centers than people who tend to avoid anything new, research now shows.
Specifically, people who actively seek lifestyle changes may have a more developed connection between two specific brain areas: the hippocampus, a site for storing and retrieving new and old memories, and the ventral striatum, a reward system which is responsible for those carpe diem moments, said researcher Dr. Bernd Weber of the Life & Brain Center at the University of Bonn in Germany. Turns out, if the hippocampus identifies an experience as new, it then relays signals to the striatum to release neurotransmitters which lead to positive feelings.
