Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment

Mast, Fred W.; Oman, Charles M. (2004). Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment. Swiss journal of psychology, 63(3), pp. 143-149. Huber 10.1024/1421-0185.63.3.143

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The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology > Cognitive Psychology, Perception and Methodology

UniBE Contributor:

Mast, Fred

Subjects:

100 Philosophy > 150 Psychology

ISSN:

1421-0185

Publisher:

Huber

Language:

English

Submitter:

Jeannette Gatschet

Date Deposited:

04 Nov 2020 11:31

Last Modified:

04 Nov 2020 11:31

Publisher DOI:

10.1024/1421-0185.63.3.143

BORIS DOI:

10.7892/boris.147257

URI:

https://boris.unibe.ch/id/eprint/147257

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