Startle Response

Definition

The startle response is a rapid, involuntary reaction to a sudden or unexpected stimulus such as a loud noise or sudden movement.

Analogy

Think of the startle response like your phone's alarm going off unexpectedly. Your body "jumps" in surprise, just like you might jump when your alarm goes off without warning.

Related terms

Reflex Arc: This is the neural pathway that controls an action reflex. In the case of the startle response, this would be the path from sensory input (the sudden noise) to motor output (jumping in surprise).

Fight-or-Flight Response: This is a physiological reaction that occurs in response to perceived harmful events or threats to survival. The startle response can be considered part of this broader system.

Sensory Thresholds: These are the minimum levels of stimulation needed for detection by our senses. If a sound is below our auditory threshold, it won't trigger a startle response.