The ITFR, impulsive tail flick reflex by short duration nociceptive stimuli

► Impulsive nociceptive stimuli used to evoke tail flick. ► Tail flick response recorded with electromyography and strain gauge. ► Response made up by three components early, late and ultralate. ► Afferents Aδ for early and C for late and ultralate. ► To be used for studying mechanisms of nociception and analgesics.