title: 1-D Vision: Encoding of Eye Movements by Simple Receptive Fields.
abstract: Eye movements (eyeM) are an essential component of visual perception. They allow the sampling and scanning of stationary scenes at various spatial scales, primarily at the scene level, via saccades, and at the local level, via fixational eyeM. Given the constant motion of visual images on the retina, a crucial factor in resolving spatial ambiguities related to the external scene is the exact trajectory of eyeM. We show here that the trajectory of eyeM can be encoded at high resolution by simple retinal receptive fields of the symmetrical type. We also show that such encoding can account for motion illusions such as the Ouchi illusion. In addition, encoding of motion projections along horizontal and vertical symmetrical simple retinal receptive fields entails a kind of Cartesian decomposition of the 2-D image into two 1-D projections.
authors.affiliation: Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel ehud.ahissar@weizmann.ac.il.
authors.forename: Ehud
authors.initials: E
authors.lastname: Ahissar
authors.affiliation: Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.
authors.forename: Shira
authors.initials: S
authors.lastname: Ozana
authors.affiliation: Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.
authors.forename: Amos
authors.initials: A
authors.lastname: Arieli
mesh_terms: D005133:Eye Movements / Q000502:physiology*; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D009039:Motion Perception / Q000502:physiology; D009903:Optical Illusions / Q000502:physiology; D009949:Orientation / Q000502:physiology; D020419:Photoreceptor Cells, Vertebrate / Q000502:physiology; D011601:Psychophysics; D012160:Retina / Q000502:physiology*; D012438:Saccades / Q000502:physiology; D013028:Space Perception / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology; D014795:Visual Pathways / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*
keywords: active vision; drift; fixational eye movements; perception; simple cells; visual stability