title: [Selectivity to spatial frequencies in the pigeon's optic tectum cells].
abstract: Extracellular cell recordings in the pigeon optic tectum show a selectivity of response to different sine-wave gratings presented in motion. The optimal frequencies are found to be between 0.4 and 0.9 cycle/degree and are independent of direction, orientation and velocity.
mesh_terms: D000818:Animals; D001931:Brain Mapping; D010856:Columbidae / Q000502:physiology*; D005556:Form Perception / Q000502:physiology; D009039:Motion Perception / Q000502:physiology; D013477:Superior Colliculi / Q000166:cytology / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*
vernacular_title: La sélectivité fréquences spatiales des cellules du toit optique du pigeon.