Perception of two-dimensional, simulated ego-motion trajectories from optic flow

被引:29
作者
Bertin, RJV
Israël, I
Lappe, M
机构
[1] Coll France, LPPA, F-75005 Paris, France
[2] Ruhr Univ Bochum, F-44780 Bochum, Germany
关键词
path perception; ego-motion; optic flow; linear heading; circular heading; vision; vestibular;
D O I
10.1016/S0042-6989(00)00134-6
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
A veridical percept of ego-motion is normally derived from a combination of visual, vestibular, and proprioceptive signals. A previous study showed that blindfolded subjects can accurately perceive passively travelled straight or curved trajectories provided that the orientation of the head remained constant along the trajectory. When they were turned (whole-body, head-fixed) relative to the trajectory, errors occurred. We ask whether vision allows for better path perception in that situation, to correct or complement vestibular perception. Seated, stationary subjects wore a head mounted display showing optic flow stimuli which simulated linear or curvilinear 2D trajectories over a horizontal ground plane. The observer's orientation was either fixed in space, fixed relative to the path, or changed relative to both. After presentation, subjects reproduced the perceived movement with a model vehicle, of which position and orientation were recorded. They tended to correctly perceive ego-rotation (yaw), but they perceive orientation as fixed relative to trajectory or (unlike in the vestibular study) to space. This caused trajectory misperception when body rotation was wrongly attributed to a rotation of the path. Visual perception was very similar to vestibular perception. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2951 / 2971
页数:21
相关论文
共 53 条
[1]   Estimating heading during real and simulated eye movements [J].
Banks, MS ;
Ehrlich, SM ;
Backus, BT ;
Crowell, JA .
VISION RESEARCH, 1996, 36 (03) :431-443
[2]   MONKEY SEE, MONKEY DO [J].
BARINAGA, M .
SCIENCE, 1991, 251 (4997) :1025-1025
[3]   The use of optical velocities for distance discrimination and reproduction during visually simulated self motion [J].
Bremmer, F ;
Lappe, M .
EXPERIMENTAL BRAIN RESEARCH, 1999, 127 (01) :33-42
[4]   Linear vestibular self-motion signals in monkey medial superior temporal area [J].
Bremmer, F ;
Kubischik, M ;
Pekel, M ;
Lappe, M ;
Hoffmann, KP .
OTOLITH FUNCTION IN SPATIAL ORIENTATION AND MOVEMENT, 1999, 871 :272-281
[5]   Vision: Simple stereopsis [J].
Collett, TS .
CURRENT BIOLOGY, 1996, 6 (11) :1392-1395
[6]   PERCEIVING HEADING WITH DIFFERENT RETINAL REGIONS AND TYPES OF OPTIC FLOW [J].
CROWELL, JA ;
BANKS, MS .
PERCEPTION & PSYCHOPHYSICS, 1993, 53 (03) :325-337
[7]   Testing the Perrone and Stone (1994) model of heading estimation [J].
Crowell, JA .
VISION RESEARCH, 1997, 37 (12) :1653-1671
[8]   Visual self-motion perception during head turns [J].
Crowell, JA ;
Banks, MS ;
Shenoy, KV ;
Andersen, RA .
NATURE NEUROSCIENCE, 1998, 1 (08) :732-737
[9]   Ideal observer for heading judgments [J].
Crowell, JA ;
Banks, MS .
VISION RESEARCH, 1996, 36 (03) :471-490
[10]  
Cutting J. E., 1986, PERCEPTION EYE MOTIO