Effects of late visual impairment on mental representations activated by visual and tactile stimuli
Identifieur interne : 005A27 ( Main/Exploration ); précédent : 005A26; suivant : 005A28Effects of late visual impairment on mental representations activated by visual and tactile stimuli
Auteurs : Zaira Cattaneo [Italie] ; Tomaso Vecchi [Italie] ; Maura Monegato [Italie] ; Alfredo Pece [Italie] ; Cesare Cornoldi [Italie]Source :
- Brain research [ 0006-8993 ] ; 2007.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- Adaptation, Physiological (physiology), Adult, Age of Onset, Aging (physiology), Cognition, Cognition (physiology), Cognition Disorders (etiology), Cognition Disorders (physiopathology), Female, Human, Humans, Imagination (physiology), Male, Mental representation, Middle Aged, Neuronal Plasticity (physiology), Neuropsychological Tests, Perception, Photic Stimulation, Physical Stimulation, Recovery of Function (physiology), Spatial memory, Tactile sensitivity, Time Factors, Touch (physiology), Vision, Vision Disorders (complications), Vision Disorders (physiopathology), Vision disorder, Visual Perception (physiology), Visual memory, Visual stimulus.
- MESH :
- complications : Vision Disorders.
- etiology : Cognition Disorders.
- physiology : Adaptation, Physiological, Aging, Cognition, Imagination, Neuronal Plasticity, Recovery of Function, Touch, Visual Perception.
- physiopathology : Cognition Disorders, Vision Disorders.
- Adult, Age of Onset, Female, Humans, Male, Middle Aged, Neuropsychological Tests, Photic Stimulation, Physical Stimulation, Time Factors.
Abstract
Similarly to sighted people, individuals congenitally affected by a severe visual impairment can maintain and mentally manipulate spatial information about tactile stimuli [Vecchi, T., Cattaneo, Z., Monegato, M., Pece, A., Cornoldi, C., Pietrini, P., 2006. Why Cyclops could not compete with Ulysses : monocular vision and mental images. NeuroReport 17, 723-726]. The aim of the present study was to assess whether the onset timing of a severe (but not total) sight loss may influence spatial imagery abilities based on haptic input. To this purpose, a group of late severe visually impaired people and a matched group of normally sighted participants (all blindfolded) were presented with an imagery task requiring to memorize and retrieve a number of locations presented on tactile matrices. Results indicate that a severe visual deficit occurring later in life significantly impairs spatial imagery abilities to a greater extent than in the case of congenital blindness, probably as a consequence of a modest development of specific compensatory mechanisms associated with congenital deficits.
Affiliations:
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Le document en format XML
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<term>Cognition</term>
<term>Cognition (physiology)</term>
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<term>Tactile sensitivity</term>
<term>Time Factors</term>
<term>Touch (physiology)</term>
<term>Vision</term>
<term>Vision Disorders (complications)</term>
<term>Vision Disorders (physiopathology)</term>
<term>Vision disorder</term>
<term>Visual Perception (physiology)</term>
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<term>Visual stimulus</term>
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<term>Cognition</term>
<term>Imagination</term>
<term>Neuronal Plasticity</term>
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<term>Touch</term>
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<term>Humans</term>
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<front><div type="abstract" xml:lang="en">Similarly to sighted people, individuals congenitally affected by a severe visual impairment can maintain and mentally manipulate spatial information about tactile stimuli [Vecchi, T., Cattaneo, Z., Monegato, M., Pece, A., Cornoldi, C., Pietrini, P., 2006. Why Cyclops could not compete with Ulysses : monocular vision and mental images. NeuroReport 17, 723-726]. The aim of the present study was to assess whether the onset timing of a severe (but not total) sight loss may influence spatial imagery abilities based on haptic input. To this purpose, a group of late severe visually impaired people and a matched group of normally sighted participants (all blindfolded) were presented with an imagery task requiring to memorize and retrieve a number of locations presented on tactile matrices. Results indicate that a severe visual deficit occurring later in life significantly impairs spatial imagery abilities to a greater extent than in the case of congenital blindness, probably as a consequence of a modest development of specific compensatory mechanisms associated with congenital deficits.</div>
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<tree><country name="Italie"><noRegion><name sortKey="Cattaneo, Zaira" sort="Cattaneo, Zaira" uniqKey="Cattaneo Z" first="Zaira" last="Cattaneo">Zaira Cattaneo</name>
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<name sortKey="Monegato, Maura" sort="Monegato, Maura" uniqKey="Monegato M" first="Maura" last="Monegato">Maura Monegato</name>
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<name sortKey="Vecchi, Tomaso" sort="Vecchi, Tomaso" uniqKey="Vecchi T" first="Tomaso" last="Vecchi">Tomaso Vecchi</name>
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