III. Biological Systems (PSYBIO)
3.3 Sensory Systems (PSYSENSE)
Article 92 - Nociception
Negative stimuli such as mechanical, thermal, and chemical are detected by specialized neurons called nociceptors, found mainly in the skin and on internal surfaces such as the surface of bones and joints. Nociceptors are designed as free nerve endings with their bodies outside the spinal column and a natural threshold for releasing electrical and chemical messaging when reached or exceeded. Nociceptors themselves are specialized to react differently to different types of threat such as mechanical or trauma in contrast to thermal and chemical.
Messages received from Nociceptors in response to mechanical or trauma is called “fast pain” and described as a sharp, acute pain arriving to the thalamus quickly. In contrast, messages received in response to negative thermal or chemical stimuli travels a slower route to the thalamus and are typified by the sensation of aching, throbbing and burning pain.
While all Level V Life experiences pain and the effects of conscious distress to some degree, all medium (over 4 Kg) and large sized mammal species share in common the same social and emotional development and therefore the same cognitive and emotional trauma associated with extreme pain whether it be a member of the Homo Sapien species, or a cow, dog, sheep, whale, dolphin, pig, lion, monkey or elephant.