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Egocentric/allocentric and coordinate/categorical haptic encoding in blind people.
Gennaro Ruggiero1, Francesco Ruotolo, Tina Iachini
1Laboratory of Cognitive Science and Immersive Virtual Reality, Department of Psychology, Second University of Naples, Viale Ellittico, 33, 81100, Caserta, Italy. gennaro.ruggiero@unina2.it
Cognitive Processing
|July 19, 2012
Summary
Visual experience impacts spatial representation abilities. Blind individuals showed processing differences in specific spatial judgments, suggesting quantitative rather than qualitative variations in spatial cognition.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Spatial Cognition
Background:
- Visual experience is crucial for developing spatial representations.
- Understanding how different visual experiences affect egocentric and allocentric spatial judgments is important.
Purpose of the Study:
- To investigate the impact of visual experience on using egocentric and allocentric spatial representations.
- To examine the combined effects of categorical and coordinate spatial relations on spatial judgments in individuals with varying visual experience.
Main Methods:
- Participants (congenitally blind, adventitiously blind, blindfolded, and sighted) explored 3D object triads haptically.
- Judgments were made on egocentric-coordinate, egocentric-categorical, allocentric-coordinate, and allocentric-categorical spatial relations.
Main Results:
- Congenitally blind individuals exhibited slower processing for allocentric-coordinate judgments.
- Adventitiously blind individuals showed slower processing for egocentric-categorical judgments and were less accurate in egocentric judgments compared to sighted participants.
- Overall performance was good, indicating quantitative rather than qualitative differences.
Conclusions:
- Visual experience influences the efficiency of specific spatial representation strategies.
- The findings suggest that spatial cognition differences due to visual experience are primarily quantitative.
- This research contributes to understanding the plasticity of spatial representation systems.
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