1. fora difference threshold, the limit at which the stimulant is considered to be more significant than the principle. 2. the greatest severity of a stimulant which can be interpreted in the absence of pain.

UPPER THRESHOLD: "The upper threshold has yet to be identified."
Cite this page: N., Pam M.S., "UPPER THRESHOLD," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/upper-threshold/ (accessed September 24, 2021).