During sympathetic nervous system activation, what percentage of peripheral vision is lost?

During sympathetic nervous system activation, studies indicate that a significant amount of peripheral vision is compromised, often quantified around 70%. This loss is primarily due to the body’s heightened state of arousal, which diverts attention towards threats and enhances focus on central vision (the area directly in front of the individual). This physiological response is part of the "fight or flight" mechanism, where the visual system prioritizes a narrower field of view to concentrate on potential dangers. The loss of peripheral awareness can impact decision-making and situational awareness, especially in high-stress environments, which is crucial for someone in law enforcement or related fields to understand.