Optic flow provides all the information necessary to guide a walking human or a mobile robot to its target. Over the past 50 years, a body of research on optic flow spanning the disciplines of neurophysiology, psychophysics, experimental psychology, brain imaging and computational modelling has accumulated. Today, when we survey the field, we find independent lines of research have now converged and many arguments have been resolved; simultaneously the underpinning assumptions of flow theory are being questioned and alternative accounts of the visual guidance of locomotion proposed. At this critical juncture, this volume offers a timely review of what has been learnt and pointers to where the field is going.

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List of Contributors. Preface. 1: Optic Flow-Neurophysiology & Psychophysics. 1. Multiple Cortical Representations of Optic Flow Processing; M. Raffi, R.M. Siegel. 2. Optic Flow and Vestibular Self-Movement Cues: Multi-Sensory Interactions in Cortical Area MST; C.J. Duffy, W.K. Page. 3. A Visual Mechanism for Extraction of Heading Information in Complex Flow Fields; M.W. von Grünau, M. Iordanova. 4. Eye Movements and an Object-Based Model of Heading Perception; Ranxiao F. Wang, J.E. Cutting. 5. Short-Latency Eye Movements: Evidence for Rapid, Parallel Processing of Optic Flow; F.A. Miles, C. Busettini, G.S. Masson, D.S. Yang. 6. Functional Neuroanatomy of Heading Perception in Humans; L.M. Vaina, S. Soloviev. 7. The Event Structure of Motion Perception; M.H. Fischer, H. Hecht. 2: Optic Flow Processing and Computation. 8. Modeling Observer and Object Motion Perception; C.S. Royden. 9. Linking Perception and Neurophysiology for Motion Pattern Processing: The Computational Power of Inhibitory Connections in Cortex; S.A. Beardsley, L.M. Vaina. 10. Circular Receptive Field Structures for Flow Analysis and Heading Detection; J.A. Beintema, A.V. van den Berg, M. Lappe. 11. Parametric Measurements of Optic Flow by Humans; J.F. Barraza, N.M. Grzywacz. 12. Fast Processing of Image Motion Patterns Arising from 3-D Translational Motion; V. Sundareswaran, S.A. beardsley, L.M. Vaina. 13. On the Computation of Image Motion and Heading in a 3-D Cluttered Scene; M.S. Langer, R. Mann. 3: Visual Locomotionand Beyond. 14. From Optic Flow to Laws of Control; W.H. Warren, B.R. Fajen. 15. Egocentric Direction and Locomotion; S.K. Rushton. 16. The Utility of Not Changing Direction and the Visual Guidance of Locomotion; S.K. Rushton, J.M. Harris. 17. Gaze Behaviors During Adaptive Human Locomotion: Insights into How Vision is Used to Regulate Locomotion; A.E. Patla. 18. How do We Control High Speed Steering? J.P. Wann, R.M. Wilkie. 19. Model-Based Control of Perception/Action; J.M. Loomis, A.C. Beall. 20. A Neural Model for Biological Movement Recognition: A Neurophysiologically Plausible Theory; M.A. Giese. 21. Controlling Bipedal Movement Using Optic Flow; M.A. Lewis. Glossary. Index.