sensitivity threshold

A sensitivity threshold is the smallest level of a stimulus—such as light, sound, or touch—that a person or device can detect. For example, if a flashlight is very dim, the sensitivity threshold is the point at which it becomes bright enough for you or a sensor to notice. It helps measure how responsive someone or something is to stimuli. If the threshold is low, they can detect very faint signals; if high, they need stronger signals to notice. This concept is important in fields like medicine, engineering, and psychology to understand detection capabilities.