What is the term expressing how a receptor can be stimulated by a certain stimulus but not any other stimuli?

Receptor specificity Physical energy such as light, sound, and heat is detected by specialized receptor cells in the sense organs-eyes, ears, skin, nose, and tongue. When the action potential that relays information about the stimulus through the nervous system to the brain. Sensory receptors take in information from the environment, creating local electrical currents; These currents are graded.