Brandon was waiting in line to make a deposit at the bank when he heard the man in front of him say softly to the teller, "just give me the money now." at first brandon thought the man was just impatient, but then he realized that the guy was a bank robber. brandon felt afraid and started backing up slowly, looking for cover. brandon's emotional response probably resulted from neural impulses that

Brandon's emotional response probably resulted from neural impulses that "the sympathetic nervous system triggered the fight or flight responses."

The fight-or-flight reaction, otherwise called the acute stress response, alludes to a physiological response that happens within the sight of something that is startling, either rationally or physically. The reaction is activated by the arrival of hormones that set up your body to either remain and manage a risk or to run away to safety.  

The term 'fight-or-flight' represents to the decisions that our antiquated precursors had when looked with a threat in their condition. They could either battle or escape. In either case, the physiological and mental reaction to push readies the body to respond to the peril.

traveled along the indirect pathway, via the thalamus→cortex→amygdala.

Explanation:

When people view or face dangerous situations, or even look at an image of a fearful face, the amygdala is stimulated. As a result, when confronted with a fear-provoking situation, the amygdala enables a speedy and unconscious response.