At what heart rate will a person typically experience tunnel vision during a survival stress response?

Tunnel vision is a common physiological response that can occur during significant stress or heightened adrenaline levels, often referred to as the survival stress response. This phenomenon can lead to a narrowing of the field of vision and is typically triggered at elevated heart rates when the body is preparing for either fight or flight.

The correct answer indicates that tunnel vision can occur at a heart rate of 175 beats per minute (BPM). At this level, the body is likely experiencing a substantial release of adrenaline and other stress hormones. This response is characterized by increased heart rate, heightened alertness, and a focus on immediate threats, which can lead to the brain filtering out peripheral information.

In survival situations, the body's prioritization of immediate danger over other stimuli can result in this tunnel vision, as the individual’s awareness is intensely focused on the threat at hand. Understanding this physiological response is crucial for peace officers and others in high-stress professions, as it can impact decision-making and situational awareness during critical incidents.