title: The adaptation of the frog tongue to various taste solutions: the effect on gustatory neural responses to bitter stimuli.
abstract: 1. After the frog tongue was adapted for 10 sec to various salts and sugars, the initial phasic component of gustatory neural responses to almost all of quinine hydrochloride (Q-HCl), quinine sulfate (Q-H2SO4). Brucine, caffeine and picric acid was suppressed. 2. Following 10 sec adaptation to acetic acid, the phasic responses to Q-HCl and Q-H2SO4 were unchanged, those to brucine and caffeine were enhanced, and that to picric acid was depressed slightly. 3. The response to any one of Q-HCl, Q-H2SO4. brucine and caffeine was suppressed after adaptation to the other three, while those to picric acid and nicotine were unchanged or enhanced after adaptation to another bitter solution.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D002110:Caffeine; D002241:Carbohydrates; D010851:Picrates; D011803:Quinine; D011892:Rana catesbeiana; D012492:Salts; D013331:Strychnine; D013649:Taste / Q000502:physiology*; D013650:Taste Buds / Q000502:physiology*
chemical_list: D002241:Carbohydrates; D010851:Picrates; D012492:Salts; D002110:Caffeine; C005858:picric acid; D011803:Quinine; D013331:Strychnine