Based on the experimental outcome described in the case study, analyze the relationship between the stimulated brain structure, its neurochemical output, and the resulting physiological state.

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The locus coeruleus is a region located in the brainstem that serves as the brain's primary source of norepinephrine. This neurotransmitter is responsible for activating the body's fight-or-flight response. Research indicates a strong link between this area and anxiety, as its activation is associated with feelings of fear and anxiety. Studies involving nonhuman primates have demonstrated that direct stimulation of the locus coeruleus can induce panic-like symptoms, suggesting its potential role in panic disorder.

Locus Coeruleus

A researcher conducts an experiment where they artificially stimulate a specific nucleus within the brainstem of a nonhuman primate. The stimulation results in the animal immediately exhibiting signs of a 'fight-or-flight' response, including a rapid heart rate and heightened vigilance, which are characteristic of a panic attack. This experimental result most directly supports the conclusion that an overactivity of which neurotransmitter system is involved in generating these panic-like symptoms

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