People being `right-brained` or `left-brained` myth debunked
Washington: Researchers have claimed that there is no evidence within brain imaging that indicates some people are right-brained or left-brained.
The two-year study by the University of Utah has debunked that myth through identifying specific networks in the left and right brain that process lateralized functions.
During the course of the study, researchers analyzed resting brain scans of 1,011 people between the ages of seven and 29. In each person, they studied functional lateralization of the brain measured for thousands of brain regions -finding no relationship that individuals preferentially use their left -brain network or right- brain network more often.
"It`s absolutely true that some brain functions occur in one or the other side of the brain. Language tends to be on the left, attention more on the right. But people don`t tend to have a stronger left- or right-sided brain network . It seems to be determined more connection by connection, " Jeff Anderson, M.D., Ph.D., lead author of the study said.
A participant laid in a scanner for 5 to 10 minutes while their resting brain activity was analyzed.
In the study, researchers broke up the brain into 7,000 regions and examined which regions of the brain were more lateralized. They looked for connections - or all of the possible combinations of brain regions - and added up the number of connections for each brain region that was left- lateralized or right-lateralized.
The study is published in the journal PLOS ONE.
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