This branch requires the full throughput between various parts of the frontal cortex of the brain, and the objective processing as a physical job is completed and then held in limbo while another job is performed in order for the whole task to be completed successfully.
This is an action selection process where multiple tasks are prioritized based on acuity and intensity. A pilot under stress from a deteriorating weather condition has to maintain position awareness, change frequencies per ATC and then communicate his problem all the while making sure that the aircraft is flying at maneuvering speed and is under his or her control.
Thoughts, like the white cumulus clouds that float overhead, can sometimes coalesce into a decision of a mean cumulonimbus and all hell breaks loose. Or they can part and allow the bright sun to filter through like a clear thought.