alliesthesia

alliesthesia

A subjective response to an external stimulus that reflects the internal “homeostasis”. Any stimulus capable of ameliorating the internal homeostasis will be perceived as pleasant; any stimulus that alters the internal homeostasis would be perceived as unpleasant or painful.

alliesthesia

(al″ē-es-thē′zh(ē-)ă) The perception of an external stimulus as pleasant or unpleasant, depending upon internal stimuli. A stimulus may be perceived as pleasant at one time and unpleasant at another.