Pain versus nociception
“Nociception is everything that happens beforea noxious stimulus reaches the cerebral cortex,” explained Dr. Barletta. “It includes the periphery, nerves, and spinal cord—everything up to the cortex. Once that stimulus is processed by the cortex and the organism becomes aware of it, we start calling it pain.” Transduction, transmission, modulation, and projection are thus part of nociception. Pain occurs at the point of perception.