in anesthetized , paralyzed rats , bilateral electrolytic lesions of rostral ventrolateral medulla ( rvl ) containing epinephrine neurons of the c1 group 1 ) abolished the reflex hypotension and bradycardia elicited by electrical stimulation of the left vagus nerve or stretch of the left carotid sinus and 2 ) reduced arterial pressure ( ap ) and heart rate ( hr ) to values comparable to spinal cord transection .
C0014563
epinephrine
C0428977
bradycardia