By David N. Lee, David S. Young (auth.), David J. Ingle, Marc Jeannerod, David N. Lee (eds.)
This quantity includes chapters derived from a N. A. T. O. complicated learn Institute held in June 1983. because the director of this A. S. I. it was once my wish that a few of the e1ectrophysiologists might show the prospects in their paintings for perceptual thought, and that a few perceptionists might speculate at the underlying "units" of conception in a fashion that will have interaction the mind's eye of physio logists. The reader should be the pass judgement on of even if this was once completed, or even if one of these psychophysiological inter1ingua continues to be overly idealistic. it's transparent that once the revolution prec~pitated via Hube1 and Weisel in realizing of visible cortical neurons we nonetheless have just a foggy inspiration of the behavioral output of any specific species of cortical detector. It used to be consequently rather unlucky that folks who've made nice strides in correlating attention-grabbing points of cat cortical physio logy with human psychophysics (Max Cynader and Martin Regan of Dalhousie college) have been not able to wait this assembly. by no means theless, a couple of new and demanding rules relating to either spatial belief and cortical mechanisms are represented during this quantity, and it truly is was hoping that the reader will take note not just the person demonstrations however the severe questions posed by way of the apposition of the 2 diversified collections of experimental proof. David Ingle April 1984 VII desk OF CONTENTS PREFACE V D. N. Lee and D. S. younger visible Timing of Interceptive motion 1 J. J.
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Additional resources for Brain Mechanisms and Spatial Vision
Observations on the control of steppinG and hoppinG oover:1ents in man. Journal of Physiology 219 (1971) 709-727. Lee, D. N. A theory of visual control of braking based on information about time-to-collision. Perception 5 (1976) 437-459. Harren, ~V. H. A BiodynaElical Basis for Perception and Action in Bipedal Climbin~. PhD dissertation, University of Connecticut, 1982. Koenderink Department of Medical and Physiological Physics, Physics Laboratory, State University Utrecht, Princetonplein 5, 3584 CC Utrecht, the Netherlands Abstract: For a moving observer the angular relations between the directions of visual landmarks are time variant.
IX. Conclusions Movement of the vantage point relative to rigid surfaces induces changes in the natural perspective. One way to consider these changes is to regard the velocity field of the optical flow and 56 study its local and global structure. Another way is to consider the geometrical transformations induced by the flow in some finite period. These methods are mere points of view, they are not in essence different but they lead to different kinds of information processing strategies. It is not at all unlikely that the optical flow field is used by organisms as one means for propriocepsis: egocentric orientation, localization and the monitoring of ego-movements.
Philosophical Transactions of the Royal Society of London B 290 (1980) 169-179. Schiff, W. and M. L. Detwiler. Information used in jude;inG iopending collision. Perception 8 (1979) 647-658. Todd, J. T. Visual inforoation about moving objects. Journal of Experimental PsycholOGY: Huoan Perception and Performance 7 (1981) 795-810. Bo"Ter, T. G. , J. M. Broughton and 11. K. Moore. Infant responses to approachinG objects: An indicator of response to distal variables. Perception and Psychophysics 9 (1970) 193-196.