title: A comparative study of b- and d-waves of the electroretinogram, in frogs (Rana catesbeiana).
abstract: The aim of this study was to compare the b- and d-waves of the ERG, evoked respectively by ON and OFF  stimuli. The experiments were carried out on frogs. The d-wave is facilitated by light adaptation and relatively high stimulus intensity. The depth profiles of b- and d-waves are different. Aspartic acid abolished only the b-wave whereas nembutal affected the d-wave. These results suggested that b- and d-waves were produced by separate neuronal mechanisms, even though both appeared as positive deflection in the corneal ERG and were sensitive to K+ ion.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D001001:Anura; D001224:Aspartic Acid / Q000494:pharmacology; D004596:Electroretinography; D008027:Light; D010424:Pentobarbital / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology; D011892:Rana catesbeiana; D012160:Retina / Q000187:drug effects / Q000502:physiology*
chemical_list: D001224:Aspartic Acid; D010424:Pentobarbital; D011188:Potassium