Figure 2.

Peak changes of ∆SBP (a), ∆MAP(b), and ∆HR (c), after microinjection of saline, glutamate, NMDA (MK), and non-NMDA antagonist (GYK) of glutamate receptor and their co-injection with Glu into vlPAG nucleus. Data were expressed as mean±SEM; n= 6 (one-way ANOVA). ∆MAP: mean arterial pressure, ∆SBP: systolic blood pressure, ∆HR: heart rate, vehicle: saline microinjection, Glu: glutamate, GYK: GYKI-52466, MK: MK801. ***: P<0.001, **: P<0.01, and *: P<0.05 vs vehicle group, ###: P<0.001, ##: P<0.01, and #: P<0.05 vs Glu group