RESUMEN
The study was aimed at investigation of a deficit of learning the center-of-pressure voluntary control in patients with lesions of corticospinal and nigrostriatal systems. Thirty three patients with Parkinson's disease and 20 patients with hemiparesis after cerebrovascular accidents in the MCA participated in the investigation. The subjects stood on a force platform and in the form of a computer game were trained to match the projection of the center of pressure (a cursor) with a target on the screen under the visual feedback control. Two different postural tasks were presented. In the first task the direction of the center-of-pressure shift was not known before, so the subject learned the general strategy of the center-pressure control. In the other task a precise postural coordination should be formed. The voluntary control of the center-of-pressure position was found to be impaired in both groups of patients. In the task of moving the center of pressure in various directions (general strategy), no differences in the initial deficit of the task performance were found between the groups, but the learning was more efficient in the group of hemiparetic patients. However, in the task with precise postural coordination, despite the greater initial deficit in the parkinsonian patients, the learning in this group of patients was substantially more efficient than in hemiparetic patients. The results suggest both common and different features of the involvement of the corticospinal and nigrostriatal systems in learning voluntary control of posture.
Asunto(s)
Aprendizaje , Paresia/psicología , Enfermedad de Parkinson/psicología , Postura/fisiología , Anciano , Biorretroalimentación Psicológica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Paresia/etiología , Paresia/rehabilitación , Enfermedad de Parkinson/etiología , Accidente Cerebrovascular/complicaciones , Análisis y Desempeño de TareasRESUMEN
The paper presents the results of the study whose aims were to reveal the specific features of vertical posture maintenance in patients with various motor disorders by using a computer stabilographic complex with a bilateral platform, to draw up computer rehabilitative programmes that take into account the detected features of posture stability disorders in these groups of patients, to evaluate the efficiency of use of programmes drawn up to train vertical posture stability in the rehabilitation of patients with motor disorders of various origin.