According to Hendrix, none of us are aware of this process because it comes out of our 'old brain', our unconscious.

To differentiate, what we call the 'new brain' includes the part of our brain that is conscious, that makes decisions, that thinks, that organizes information, and creates ideas. The 'old brain' guards our existence and monitors our environment, inside and out, in order to ensure our survival. It recognizes only two conditions, "danger" and "safety". It is like a sensitive radar system that signals the alert. It's goal is survival and it will not take unnecessary chances. Like in war, an airplane that has been identified as a dangerous enemy will be attacked. An airplane that is determined to be safe, and identified as an ally, will be granted permission to enter our air space.