AP BIOLOGY

Detailed explanation-1: -Reaction time (RT) is a measure of the quickness with which an organism responds to some sort of stimulus. RT is defined as the interval of time between the presentation of the stimulus and appearance of appropriate voluntary response in the subject.

Detailed explanation-2: -After the ruler is dropped, the eye sends a message to the visual cortex, which perceives that the ruler has fallen. The visual cortex sends a message to the motor cortex to initiate catching the ruler. The motor cortex sends a message to the spinal cord, which then sends a message to the muscle in the hand/fingers.

Detailed explanation-3: -The time between noticing something (the ruler falling) and then responding to it (catching the ruler) is known as reaction time. We use our eyes and other sensory organs to detect what’s going on around us. Understanding this information and deciding how to respond to it is the job of the nervous system.

Detailed explanation-4: -This experiment does not test a simple reflex. Rather, this activity is designed to measure the response time to something that you see. Catching a dropped ruler begins with the eye watching the ruler in anticipation of it falling.