DIRECTIONAL MOVEMENT AND HORIZONTAL EDGE DETECTORS IN THE  PIGEON RETINA.
There are ganglion cells in the pigeon retina that respond selectively, some to any edge moving in a particcular direction only, others to any vertically moving horizontal edge. This selective response to a specific stimulus arises from the selective sensitivity of each neuron to a particular spatiotemporal configuration in its afferent influences, and is independent of specific pathways.
D000818:Animals; D001717:Birds; D010856:Columbidae; D009068:Movement; D009474:Neurons; D010827:Physiology; D012106:Research; D012160:Retina
BIRDS; EXPERIMENTAL LAB STUDY; PHYSIOLOGY; RETINA