Figure 3. Effect on mean arterial blood pressure (MAP; panel A) and heart rate (HR; panel B) of bilateral microinjections of cerebrospinal fluid (CSF, 200 nl) or kynurenic acid (Kyn, 2.7 nmol/200 nl) within the rostral ventrolateral medulla and effect of electrical nucleus raphe obscurus stimulation (NROS). B1, baseline values; B2, post-drug baseline values. Data are reported as means ± SEM for 7 rats. *P<0.01 compared to the preceding baseline value (Student t-test).