AP BIOLOGY

Detailed explanation-1: -A stimulus is a change in the external or internal environment that produces a physiological response. When applied to sensory receptors, it provokes behavior or response. Internal stimuli (such as changes in blood pressure) and external stimuli (tactile, sound, smell, taste, vision, etc.).

Detailed explanation-2: -Many factors have been shown to affect reaction times, including age, gender, physical fitness, fatigue, distraction, alcohol, personality type, and whether the stimulus is auditory or visual.