Related Experiment Videos
A general model for the perception of space and motion
1Department of Psychology, University of Dundee, Scotland, UK.
Perception
|January 1, 1996
Summary
Visual perception transforms retinal signals through egocentric and geocentric frames of reference. This process enables the brain to achieve perceptual constancy for space and motion, regardless of viewing conditions.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- Visual perception relies on processing signals from different reference frames.
- Visual input is initially coded in retinal coordinates.
Purpose of the Study:
- To explain the successive transformations of visual signals.
- To describe the process of achieving perceptual constancy for space and motion.
Main Methods:
- Analysis of signal transformations from retinal to egocentric and geocentric frames.
- Integration of visual input with eye position and movement signals.
Main Results:
- Unified retinocentric values are combined with eye movement signals to form an egocentric reference.
- Egocentric signals are transformed into a three-dimensional geocentric frame of reference.
- Pattern-centric interactions can influence transformations within the visual field.
Conclusions:
- Perceptual constancy is achieved when the geocentric signal matches physical space and motion.
- Understanding these transformations is key to understanding spatial and motion perception.