Left Brain vs. Right: It’s a Myth, Research Finds
| he idea that one side of the brain is dominant is a myth, researchers say. Credit: Human brain image via Shutterstock |
It’s the foundation of myriad personality assessment tests, self-motivation books and team-building exercises – and it’s all bunk.
Popular culture would have you believe that logical, methodical and analytical people are left-brain dominant, while the creative and artistic types are right-brain dominant. Trouble is, science never really supported this notion.
Now, scientists at the University of Utah have debunked the myth with an analysis of more than 1,000 brains. They found no evidence that people preferentially use their left or right brain. All of the study participants — and no doubt the scientists — were using their entire brain equally, throughout the course of the experiment.
A paper describing this study appeared in August in the journal PLOS ONE. [10 Things You Didn't Know About the Brain]
The preference to use one brain region more than others for certain functions, which scientists call lateralization, is indeed real, said lead author Dr. Jeff Anderson, director of the fMRI Neurosurgical Mapping Service at the University of Utah. For example, speech emanates from the left side of the brain for most right-handed people. This does not imply, though, that great writers or speakers use their left side of the brain more than the right, or that one side is richer in neurons.
There is a misconception that everything to do with being analytical is confined to one side of the brain, and everything to do with being creative is confined to the opposite side, Anderson said. In fact, it is the connections among all brain regions that enable humans to engage in both creativity and analytical thinking.
“It is not the case that the left hemisphere is associated with logic or reasoning more than the right,” Anderson told LiveScience. “Also, creativity is no more processed in the right hemisphere than the left.”
Anderson’s team examined brain scans of participants ages 7 to 29 while they were resting. They looked at activity in 7,000 brain regions, and examined neural connections within and between these regions. Although they saw pockets of heavy neural traffic in certain key regions, on average, both sides of the brain were essentially equal in their neural networks and connectivity.
Source: http://truthisscary.com/2014/02/left-brain-vs-right-its-a-myth-research-finds/
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