Introduction: We previously shown that microinjection of glutamate into the hDB of rat
elicited cardiovascular depressive responses. Microinjection of AP5 (an NMDA receptor
antagonist, 2.5 mM, 50 nl) and CNQX (an AMPA receptor antagonist, 1 mM, 50 nl) caused
no significant changes in the blood pressure and heart rate. Microinjection of bicuculline
(BMI: a GABAA receptor antagonist, 1 mM, 50...