
pmid: 22960256
Representing the position of the objects independently from our own position is a fundamental cognitive ability. Here we investigated whether this ability depends on visual experience. Congenitally blind, late blind and blindfolded sighted participants haptically learnt a room-sized regularly shaped array of objects, and their spatial memory was tested to determine which spatial reference frame was used. Crucially, the use of an object-based reference frame requires representing the regular structure of the array. We found that blindfolded sighted and late blind participants, that is those with visual experience, showed a preferential use of the object-based or 'allocentric' reference frame. On the contrary, congenitally blind participants preferred a self-based, or egocentric, reference frame. This suggests that, due to its developmental effect on the multisensory brain areas involved in spatial cognition, visual experience is necessary to develop a preference for an object-based, allocentric reference frame.
Adult, Male, Analysis of Variance, Recognition, Psychology, Middle Aged, Vestibular Function Tests, Blindness, Proprioception, User-Computer Interface, Young Adult, Orientation, Space Perception, Exploratory Behavior, Reaction Time, Visual Perception, Humans, Learning, Female, Cues, Psychomotor Performance
Adult, Male, Analysis of Variance, Recognition, Psychology, Middle Aged, Vestibular Function Tests, Blindness, Proprioception, User-Computer Interface, Young Adult, Orientation, Space Perception, Exploratory Behavior, Reaction Time, Visual Perception, Humans, Learning, Female, Cues, Psychomotor Performance
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