> if the average signal in 2 areas have a similar shape, we say they are "functionally connected." not so hard to understand: The "functional" is because the

> if the average signal in 2 areas have a similar shape, we say they are "functionally connected." not so hard to understand: The "functional" is because these analysis were usually applied to a specific task condition, thus function specific. "similar shape" or "connectivity" is operationalized by correlation, though there are many other ways.