title: Spatial organization of the excitatory regions in the receptive fields of the avian optic tectum and their spatial frequency selectivity.
mesh_terms: D000818:Animals; D010856:Columbidae; D004553:Electric Conductivity; D004558:Electric Stimulation; D009474:Neurons / Q000502:physiology*; D013477:Superior Colliculi / Q000502:physiology*