title: Modulation of response threshold in frog spinal cord: dependence upon descending influences.
mesh_terms: D000818:Animals; D001001:Anura; D005795:Generalization, Stimulus; D006185:Habituation, Psychophysiologic; D006234:Handling, Psychological; D011892:Rana catesbeiana / Q000502:physiology*; D011894:Rana pipiens / Q000502:physiology*; D012018:Reflex / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology*; D014110:Touch / Q000502:physiology*