Introduction to Sensation

Sensation involves the relay of information from sensory receptors to the brain and enables a person to experience the world around them.

The absolute threshold is the lowest intensity at which a stimulus can be detected.

The minimum amount of change in sensory stimulation needed to recognize that a change has occurred is known as the just-noticeable difference.

Sensory adaptation is the decrease in the responsiveness of a sensory system that is confronted with a constant stimulus.