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Respective Contribution of Orientation Contrast and Illusion of Self-Tilt to the Rod-And-Frame Effect
- Source :
- Perception. 24:623-630
- Publication Year :
- 1995
- Publisher :
- SAGE Publications, 1995.
-
Abstract
- The visual angle subtended by the frame seems to be an important determinant of the contribution of orientation contrast and illusion of self-tilt (ie vection) to the rod-and-frame effect. Indeed, the visuovestibular factor (which produces vection) seems to be predominant in large displays and the contrast effect in small displays. To determine how these two phenomena are combined to account for the rod-and-frame effect, independent estimates of the magnitude of each component in relation to the angular size subtended by the display were examined. Thirty-five observers were exposed to three sets of experimental situations: body-adjustment test (illusion of self-tilt only), the tilt illusion (contrast only) and the rod-and-frame test, each display subtending 7, 12, 28, and 45 deg of visual angle. Results showed that errors recorded in the three situations increased linearly with the angular size. Whatever the size of the frame, both mechanisms, contrast effect (tilt illusion) and illusory effect on self-orientation (body-adjustment test), are always present. However, rod-and-frame errors became greater at a faster rate than the other two effects as the size of the stimuli became larger. Neither one nor the other independent phenomen, nor the combined effect could fully account for the rod-and-frame effect whatever the angular size of the apparatus.
- Subjects :
- Adult
Male
media_common.quotation_subject
Contrast effect
Posture
Illusion
Experimental and Cognitive Psychology
050105 experimental psychology
Contrast Sensitivity
Discrimination Learning
03 medical and health sciences
0302 clinical medicine
Optics
Artificial Intelligence
Angular diameter
Orientation
Orientation (geometry)
Psychophysics
Humans
Contrast (vision)
Attention
0501 psychology and cognitive sciences
Kinesthesis
Postural Balance
media_common
Physics
Optical Illusions
business.industry
Perceived visual angle
05 social sciences
030229 sport sciences
Sensory Systems
Ophthalmology
Tilt (optics)
Pattern Recognition, Visual
Female
Visual angle
business
Subjects
Details
- ISSN :
- 14684233 and 03010066
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Perception
- Accession number :
- edsair.doi.dedup.....55e1c5e812a39c647483438e47f379c9