Discrimination of spatiotemporal patterns: the role of sustained and transient mechanisms
| Autor: | Gordon Shulman, Patrick Mulvanny |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
genetic structures
media_common.quotation_subject Experimental and Cognitive Psychology Pattern perception Stimulus (physiology) 050105 experimental psychology Discrimination Learning Flicker Fusion 03 medical and health sciences 0302 clinical medicine Artificial Intelligence Perception Humans 0501 psychology and cognitive sciences media_common Communication business.industry Subthreshold conduction Flicker 05 social sciences Sensory Systems Form Perception Ophthalmology Pattern Recognition Visual Sensory Thresholds Space Perception sense organs business Psychology Neuroscience Perceptual Masking 030217 neurology & neurosurgery |
| Zdroj: | Perception. 12(5) |
| ISSN: | 0301-0066 |
| Popis: | The role of sustained and transient mechanisms in pattern and flicker perception has been examined in two discrimination experiments. In the first, observers were required to analyze the temporal or spatial properties of a stimulus that highly stimulated either sustained or transient mechanisms. The results were only partially consistent with a model identifying sustained mechanisms with pattern perception and transient mechanisms with flicker perception. In the second experiment a subthreshold summation paradigm was used to explore interactions among those mechanisms that encode the temporal and spatial properties of a stimulus. The effect of a subthreshold temporal-frequency change on discrimination performance could not be explained by models in which temporal-frequency and spatial-frequency changes are evaluated separately and then combined. |
| Databáze: | OpenAIRE |
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