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Paper Information

Journal:   HARAKAT   Spring 2003 , Volume - , Number 15; Page(s) 5 To 26.
 
Paper: 

HOW IS MOTOR LEARNING AFFECTED BY STROKE

 
 
Author(s):  ASHAYERI HASAN, SHEIKH M., BAGHERZADEH F.A., MOKHTARI P.
 
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Abstract: 
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Background: Cerebrovascular attacks have a devastating effect on the lives of their victims. The effects involve sensory-motor, cognitive, psychological as well as many other psychosocial damages. On the other hand, motor learning is a major aspect of human life, since many daily and lifetime skills are learned through a series of complex mechanisms in the nervous system. Although the most known disorder caused by stroke (i.e., the paralysis of limbs and muscles) is investigated thoroughly in past decades, there are few investigations focusing on other aspects of stroke pathology including motor learning. We have performed this study to delineate the consequences of a cerebrovascular attack on the process of motor learning. Patients and Methods: 40 subjects with anterior circulation stroke whose attacks were about two years ago (20 with left - and 20 with right-side lesion), were selected as the experimental group. 40 right-handed control subjects, matched according to sex, age and dominancy with the experimental group, were invited to attend the study. Both groups practiced a fast spatial-temporaltask in either augmented (100%) or faded (67%) feedback circumstances. Evaluation of acquisition, recall and reacquisition was performed after 198 trials.
Results: Both groups showed significant improvement in performance accuracy and consistency in the acquisition phase and there was no significant difference among the performance patterns of the subjects during the acquisition, recall and Background: Cerebrovascular attacks have a devastating effect on the lives of their victims. The effects involve sensory-motor, cognitive, psychological as well as many other psychosocial damages. On the other hand, motor learning is a major aspect of human life, since many daily and lifetime skills are learned through a series of complex mechanisms in the nervous system. Although the most known disorder caused by stroke (ie., the paralysis of limbs and muscles) is investigated thoroughly in past decades, there are few investigations focusing on other aspects of stroke pathology including motor learning. We have performed this study to delineate the consequences of a cerebrovascular attack on the process of motor learning. Patients and Methods: 40 subjects with anterior circulation stroke whose attacks were about two years ago (20 with left - and 20 with right-side lesion), were selected as the experimental group. 40 right-handed control subjects, matched according to sex, age and dominancy with the experimental group, were invited to attend the study. Both groups practiced a fast spatial-temporaltask in either augmented (100%) or faded (67%) feedback circumstances. Evaluation of acquisition, recall and reacquisition was performed after 198 trials.
Results: Both groups showed significant improvement in performance accuracy and consistency in the acquisition phase and there was no significant difference among the performance patterns of the subjects during the acquisition, recall and
 
Keyword(s): STROKE, MOTOR CONTROL, ACQUISTION, RECALL, REACQUISITION, AUGMENTED FEEDBACK
 
References: 
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