A 32-year-old woman is brought to the emergency department experiencing a sudden onset of intense fear, palpitations, chest pain, shortness of breath…

A 32-year-old woman is brought to the emergency department experiencing a sudden onset of intense fear, palpitations, chest pain, shortness of breath, dizziness, and a profound fear of dying. The episode peaked within 10 minutes and subsided after about 30 minutes. She reports having had several similar unexpected episodes over the past month, accompanied by persistent worry about having another attack. Which neurotransmitter system is primarily implicated in the pathophysiology of this condition and targeted by acute benzodiazepine treatment?