There are different kinds of studies. Eriko's task least likely involved brain the lift hemisphere of his brain.
Functional magnetic resonance imaging (fMRI) is known to be a kind of imaging technique that is often used to look at the changes in the activity of the working of the human brain.
It often measures the little changes in blood flow that takes place inside the brain activity. It can note some abnormalities within the brain using the imaging techniques.
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