其作用机理是枸橼酸钠刺激了颈动脉窦区感受器，通过迷走神经传入呼吸中枢引起的。
Its functional mechanism is that Na-citrate has stimulated the carotid sinus through the vagus nerve to the respiratory centre.
手术移植一个起搏器，通过颈部的迷走神经向大脑发射电刺激。
The surgically implanted device sends electrical pulses to the brain through the vagus nerve in the neck.
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