Bisecting lines with different tools in right brain damaged patients: the role of action programming and sensory feedback in modulating spatial remapping
| Autor: | Maurizio Ferrarin, Raffaella Ricci, Anna Berti, L Spinazzola, Francesca Schiavone, Marco Neppi-Modona, Alessia Folegatti, Marco Rabuffetti |
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| Rok vydání: | 2007 |
| Předmět: |
Adult
Cognitive Neuroscience Feedback Psychological Experimental and Cognitive Psychology Sensory system Intention Space (commercial competition) Lateralization of brain function Functional Laterality Task (project management) Perceptual Disorders spatial remapping Reference Values Adaptation Psychological Humans Problem Solving far and near space Aged Aged 80 and over Communication Depth Perception Tool Use Behavior business.industry neglect Representation (systemics) brain damage Middle Aged Proprioception Near space Spatial relation tool use Neuropsychology and Physiological Psychology Action (philosophy) Case-Control Studies Space Perception Brain Damage Chronic business Psychology Cognitive psychology |
| Zdroj: | Cortex; a journal devoted to the study of the nervous system and behavior. 43(3) |
| ISSN: | 0010-9452 |
| Popis: | In a first experiment we studied, through a line bisection task, (a) the frequency of the selective disruption of far or near space representations in a group of 28 right brain-damaged patients and (b) the effect of tool use on line bisection error in far and near space in order to clarify whether the kind of action performed by the subject influences the extension of space representation, as suggested by previous studies. In a second experiment, carried out on two neglect patients, we asked whether the representation of “near” and “far” space depends on the sensory feedback during the execution of the action or whether it is independent on sensory feedback and more related to the action programmed as a consequence of the kind of tool used. Our data show (a) that dissociations between far and near space neglect are a frequent observation in right brain damaged patients and that most of these patients are able to recode space representations when tools change the spatial relation between the agent's body and the target object; (b) that spatial remapping can be elicited by the kind of action associated to the tool used and by the sensory feedback (either visual or proprioceptive) available during the execution of the task. In particular, presence of tactile proprioceptive feedback elicited remapping of far space into near space, whereas absence of visual feedback induced remapping of near space into far space. |
| Databáze: | OpenAIRE |
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