Humans can use optic flow to estimate distance of travel

We demonstrate that humans can use optic flow to estimate distance travelled when appropriate scaling information is provided. Eleven subjects were presented with visual targets in a virtual corridor. They were then provided with optic flow compatible with movement along the corridor and asked to indicate when they had reached the previously presented target position. Performance depended on the movement profile: for accelerations above 0.1 m/s2 performance was accurate. Slower optic-flow acceleration resulted in an overestimation of motion which was most pronounced for constant velocity motion when the overestimation reached 170%. The results are discussed in terms of the usual synergy between multiple sensory cues to motion and the factors that might contribute to such a pronounced miscalibration between optic flow and the resulting perception of motion.

[1]  J. Perrone,et al.  Human Heading Estimation During Visually Simulated Curvilinear Motion , 1997, Vision Research.

[2]  R. Klatzky,et al.  Nonvisual navigation by blind and sighted: assessment of path integration ability. , 1993, Journal of experimental psychology. General.

[3]  Johannes M. Zanker,et al.  How does noise influence the estimation of speed? , 1999, Vision Research.

[4]  I. Howard,et al.  Vection: The Contributions of Absolute and Relative Visual Motion , 1994, Perception.

[5]  D Regan,et al.  Accuracy of estimating time to collision using binocular and monocular information , 1998, Vision Research.

[6]  J. Gibson.  The perception of the visual world , 1951 .

[7]  Gundry Aj,et al.  Thresholds of perception for periodic linear motion. , 1978 .

[8]  James A. Crowell,et al.  The perception of heading during eye movements , 1992, Nature.

[9]  M S Redfern,et al.  Postural sway of patients with vestibular disorders during optic flow. , 1994, Journal of vestibular research : equilibrium & orientation.

[10]  Zhang,et al.  Honeybee navigation en route to the goal: visual flight control and odometry , 1996, The Journal of experimental biology.

[11]  A Berthoz,et al.  Spatial memory of body linear displacement: what is being stored? , 1995, Science.

[12]  D. Regan,et al.  Visually guided collision avoidance and collision achievement , 2000, Trends in Cognitive Sciences.

[13]  D J Hannon,et al.  Eye movements and optical flow. , 1990, Journal of the Optical Society of America. A, Optics and image science.

[14]  A. J. Benson,et al.  Thresholds for the detection of the direction of whole-body, linear movement in the horizontal plane. , 1986, Aviation, space, and environmental medicine.

[15]  H. C. Longuet-Higgins,et al.  The interpretation of a moving retinal image , 1980, Proceedings of the Royal Society of London. Series B. Biological Sciences.

[16]  F. Bremmer,et al.  The use of optical velocities for distance discrimination and reproduction during visually simulated self motion , 1999, Experimental Brain Research.

[17]  M. Fahle,et al.  Why do isoluminant stimuli appear slower? , 1988, Journal of the Optical Society of America. A, Optics and image science.

[18]  M V Srinivasan,et al.  Honeybee navigation: nature and calibration of the "odometer". , 2000, Science.

[19]  Stefan Treue,et al.  The effect of transiency on perceived velocity of visual patterns: a case of “temporal capture” , 1993, Vision Research.

[20]  F H Previc,et al.  The effects of dynamic visual stimulation on perception and motor control. , 1992, Journal of vestibular research : equilibrium & orientation.

[21]  Zhang,et al.  Visually mediated odometry in honeybees , 1997, The Journal of experimental biology.

[22]  Andrew T. Smith,et al.  Visual detection of motion , 1994 .

[23]  M. Lappe.  Neuronal processing of optic flow , 2000 .

[24]  A. Berthoz,et al.  Contribution of the otoliths to the calculation of linear displacement. , 1989, Journal of neurophysiology.

[25]  M. Landy,et al.  Measurement and modeling of depth cue combination: in defense of weak fusion , 1995, Vision Research.

[26]  L. Harris,et al.  Visual and non-visual cues in the perception of linear self motion , 2000, Experimental Brain Research.

[27]  L R Harris,et al.  Vestibular capture of the perceived distance of passive linear self motion. , 2000, Archives italiennes de biologie.