What is sensory perception?

We have specific receptors that respond to specific types of stimuli. The retinal receptors in the eye respond to light; the auditory receptors respond to sound waves; skin receptors respond to touch, vibration, pain etc.; olfactory receptors respond to volatile chemicals and taste receptors respond to sweet, salty, sour and bitter substances. This information is conveyed via action potentials by the sensory nerves to the brain where it is transduced into perceptions. Although the receptors respond to different stimuli, they transform this information into "Action Potentials" which propagate along sensory neurons until they reach specific areas of the brain. One can't distinguish between an action potential produced by the retina from any other sensory induced action potential. Only when they reach the specific brain area responsible for a particular sense, can we actually "perceive" or interpret the sensation.