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Social and Behavioral Sciences Commons™
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Articles 1 - 4 of 4
Full-Text Articles in Social and Behavioral Sciences
Attentional Selection In Judgments Of Stereo Depth, Bart Farell, Cherlyn J. Ng
Attentional Selection In Judgments Of Stereo Depth, Bart Farell, Cherlyn J. Ng
Biomedical and Chemical Engineering - All Scholarship
Stereoscopic depth is most useful when it comes from relative rather than absolute disparities. However, the depth perceived from relative disparities can vary with stimulus parameters that have no connection with depth or are irrelevant to the task. We investigated observers’ ability to judge the stereo depth of task-relevant stimuli while ignoring irrelevant stimuli. The calculation of depth from disparity differs for 1-D and 2-D stimuli and we investigated the role this difference plays in observers’ ability to selectively process relevant information. We show that the presence of irrelevant disparities affects perceived depth differently depending on stimulus dimensionality. Observers could …
The Perception Of Symmetry In Depth: Effect Of Symmetry Plane Orientation, Bart Farell
The Perception Of Symmetry In Depth: Effect Of Symmetry Plane Orientation, Bart Farell
Biomedical and Chemical Engineering - All Scholarship
The visual system is sensitive to symmetries in the frontoparallel plane, and bilateral symmetry about a vertical axis has a particular salience. However, these symmetries represent only a subset of the symmetries realizable in three-dimensional space. The retinal image symmetries formed when viewing natural objects are typically the projections of three-dimensional objects—animals, for example—that have a symmetry in depth. To characterize human sensitivity to depth symmetry, experiments measured observers’ ability to discriminate stereo displays that were symmetrically distributed in depth and those that were asymmetrically distributed. Disparity values were distributed about one of four planes passing through the z-axis and …
Perceived Depth In Non-Transitive Stereo Displays, Bart Farell, Cherlyn J. Ng
Perceived Depth In Non-Transitive Stereo Displays, Bart Farell, Cherlyn J. Ng
Biomedical and Chemical Engineering - All Scholarship
The separation between the eyes shapes the distribution of binocular disparities and gives a special role to horizontal disparities. However, for one-dimensional stimuli, disparity direction, like motion direction, is linked to stimulus orientation. This makes the perceived depth of one-dimensional stimuli orientation dependent and generally non-veridical. It also allows perceived depth to violate transitivity. Three stimuli, A, B, and C, can be arranged such that A > B (stimulus A is seen as farther than stimulus B when they are presented together) and B > C, yet A ≤ C. This study examines how the visual system handles the depth of A, …
Perceived Depth In Non-Transitive Stereo Displays, Bart Farell, Cherlyn J. Ng
Perceived Depth In Non-Transitive Stereo Displays, Bart Farell, Cherlyn J. Ng
Biomedical and Chemical Engineering - All Scholarship
The separation between the eyes shapes the distribution of binocular disparities and gives a special role to horizontal disparities. However, for one-dimensional stimuli, disparity direction, like motion direction, is linked to stimulus orientation. This makes the perceived depth of one-dimensional stimuli orientation dependent and generally non-veridical. It also allows perceived depth to violate transitivity. Three stimuli, A, B, and C, can be arranged such that A > B (stimulus A is seen as farther than stimulus B when they are presented together) and B > C, yet A 6 C. This study examines how the visual system handles the depth of A, …