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THE PERCEPTION OF DISTANCE AND ANGLE RELATIONS FOR SIMPLE DOT PATTERNS

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Date Issued:
1986
Summary:
This research was concerned with the perception of inter-element distance and angle relations for pairs of dots arranged vertically, horizontally, oblique-left, and oblique-right. For each trial, a pair of dots was presented in different global locations, for five consecutive frames. The subject's task was to detect a change in the relative location of the dots, which could occur during one of the five frames. Each subject participated in three different conditions. One condition emphasized the detection of changes in distance between the elements; the second emphasized the detection of changes in the angle formed by the elements. The third condition did not focus attention on either distance or angle changes. Results indicated that focussing attention on either distance or angle changes affected sensitivity to distance changes for rectilinear, but not for oblique arrangements. These results suggested that the vertical and horizontal components of Inter-element distance are perceptually fundamental, and that the Euclidean distance between two elements and the angle formed by the elements are internally computed from the perceptually fundamental distance components.
Title: THE PERCEPTION OF DISTANCE AND ANGLE RELATIONS FOR SIMPLE DOT PATTERNS.
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Name(s): O'ROURKE, GERALD.
Florida Atlantic University, Degree grantor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1986
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 46 p.
Language(s): English
Summary: This research was concerned with the perception of inter-element distance and angle relations for pairs of dots arranged vertically, horizontally, oblique-left, and oblique-right. For each trial, a pair of dots was presented in different global locations, for five consecutive frames. The subject's task was to detect a change in the relative location of the dots, which could occur during one of the five frames. Each subject participated in three different conditions. One condition emphasized the detection of changes in distance between the elements; the second emphasized the detection of changes in the angle formed by the elements. The third condition did not focus attention on either distance or angle changes. Results indicated that focussing attention on either distance or angle changes affected sensitivity to distance changes for rectilinear, but not for oblique arrangements. These results suggested that the vertical and horizontal components of Inter-element distance are perceptually fundamental, and that the Euclidean distance between two elements and the angle formed by the elements are internally computed from the perceptually fundamental distance components.
Identifier: 14288 (digitool), FADT14288 (IID), fau:11096 (fedora)
Note(s): Thesis (M.A.)--Florida Atlantic University, 1986.
Charles E. Schmidt College of Science
Subject(s): Visual perception
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/14288
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.