Absolute distance perception during sagittal head motion
نویسندگان
چکیده
منابع مشابه
Absolute distance perception during in-depth head movement: calibrating optic flow with extra-retinal information
We investigated the ability of monocular human observer to scale absolute distance during sagittal head motion in the presence of pure optic flow information. Subjects were presented at eye-level computer-generated spheres (covered with randomly distributed dots) placed at several distances. We compared the condition of self-motion (SM) versus object-motion (OM) using equivalent optic flow fiel...
متن کاملMotion parallax and absolute distance.
The accuracy of absolute distance estimation based on monocular motion parallax was determined both before and after specific training. With the usual distance information eliminated, subjects either held their heads stationary, or rhythmically rotated their heads from side to side, while judging the distance of stimuli placed 4-15 ft. away. Before training, head movement produced more accurate...
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A previous investigation in our laboratory showed that virtual environment users rely on image velocity errors rather than image displacement errors to sense head-tracking latency. In that study, the effect of image displacement error may have been suppressed because its peak amplitudes were associated with higher head velocity, which is thought to suppress visual motion sensitivity. To determi...
متن کاملDeterminants of the perception of sagittal motion.
This study examines the change in the perceived distance of an object in three-dimensional space when the object and/or the observer's head is moved along the line of sight (sagittal motion) as a function of the perceived absolute (egocentric) distance of the object and the perceived motion of the head. To analyze the processes involved, two situations, labeled A and B, were used in four experi...
متن کاملRelative cues and absolute distance perception.
I I t is possible, in theory, for the simultaneous occurrence of several different relative cues i of distances to increase the veridicality of the perception of absolute distance. To test whether I this actually occurs, a three-dimensional display was viewed monocularly while moving the head laterally, under conditions in which some error in perceived absolute distance was expected. The percei...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/1.3.311