The rational brain or “neo cortex” gives human beings the unique ability to analyze , rationalize & brainstorm , given a problem statement
On the other hand , limbic or emotional brain has been inherited from apes , gives us emotions e.g. feelings of love , affection etc.
To understand the respective arousal , nothing can be more apt than the following saying from Simon Sinek , adopted from the book titled “Together is Better”
“Our minds can be convinced but our hearts must be won”