trigger zone

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trig·ger zone

n. área sensitiva que al recibir un estímulo ocasiona una reacción en otra parte del cuerpo.
References in periodicals archive ?
Antiemetic agents are the most common intervention in the management of treatment-related nausea and vomiting (N&V) that completely block the peripheral neuroreceptors and the chemoreceptor trigger zone (CTZ) that are known to contain receptors for serotonin, histamine (H1 and H2), dopamine, acetylcholine, opioids, and numerous other endogenous neurotransmitters.
You might need to gently draw him away from the trigger zone in the beginning, but he should quickly learn that leaving the bark-spot and coming to you is definitely worth his while.