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Psychophysical Analysis Of Three Separate Anisotropic Patterns In Vision : Putting Visual Reference Frames In Conflict To Study The Class 1 And 2 Oblique Effects And The Horizontal Effect., Eleanor O'Keefe

Electronic Theses and Dissertations

This dissertation describes and investigates a debate about differences in the visual system’s anisotropic sensitivity to orientation as well as where and how the brain encodes visual orientation information. Three different visual perceptual patterns are discussed: the Class 1 and 2 oblique effects and the horizontal effect. The oblique effect is the ability to perceive cardinal orientations more easily than oblique orientations, and is found using narrowband stimuli. In the horizontal effect, oblique orientations are perceived most easily, horizontal orientations are perceived worst, and vertical orientations fall in-between, and is found using broadband stimuli. While the majority of authors refer …