Evans, Scott B., Charles W. Wilkinson, Kathy Bent-son, Pam Gronbeck, Aryana Zavosh, and Dianne . PVN activation is suppressed by repeated hy-poglycemia but not antecedent corticosterone in the rat. Am J Physiol Regulatory Integrative Comp Physiol 281:R1426–R1436, 2001.—The mechanism(s) underlying hypo-glycemia-associated autonomic failure (HAAF) are test the hypothesis that the activation of brain regionsinvolved in the counterregulatory response to hypoglycemiais blunted with HAAF, rats were studied in a 2-day responses and brain activation (c-Fos immu-noreactivity).