Nociception
How an organism receives and responds to painful stimuli
In physiology, nociception /ˌnəʊsɪˈsɛpʃ(ə)n/, also nocioception; from Latin nocere 'to harm/hurt') is the sensory nervous system's process of encoding noxious stimuli. It deals with a series of events and processes required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal...