Find the direction vector for the line joining the points 
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.
Definitions:
Prefrontal Cortex
The part of the brain located at the front of the frontal lobes, involved in complex behaviors, decision making, and moderating social behavior.
Executive Function
A set of cognitive processes including attentional control, inhibitory control, working memory, and cognitive flexibility, as well as reasoning, problem-solving, and planning.
Brain Region
An anatomically distinct area of the brain responsible for specific functions, such as the prefrontal cortex's role in decision-making.
Localization of Function
Localization of function is the concept that specific areas of the brain are responsible for particular physical or psychological functions.
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