it is a test through a ray of light, that is applied on the tails of the rodents to measure the pain sensitivity. Tail flick test measures the animal's sensitivity to pain.

TAIL FLICK: "Tail flick measures the sensitivity of pain in tail area."
Cite this page: N., Pam M.S., "TAIL FLICK," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/tail-flick/ (accessed April 18, 2021).