Pain is a complex sensory-perceptual phenomenon that is processed in the nociceptive somatosensory system, and that occurs as a consequence of physical, chemical or mechanical stimuli that act on the nociceptors. As a defense mechanism, it alerts us to the danger that threatens homeostasis. 

The temptation to attribute hypnotic analgesia to the simple suggestive modification of perception has been too great, and that is why in most texts the interpretation is reduced to the so-called psychological effect, which is maintained too simply, without the essential neurophysiological foundation that supports it. The psychological in this case is the generating cause, but the physiological effects are much more complex.

In this lecture we offer the explanation of stomatological modeling and the analysis of the neurophysiological correlates of hypnotic anesthesia.