Among stroke victims, rehabilitation by observing the movements of others was found to evoke a clearer image and improve performance more easily than self-injured in the right hemisphere.Ken Fuchigami, a doctoral student at Kio University Graduate School, and Shu Morioka, a professor at the same university, made it clear.
One of the post-stroke rehabilitation treatments is exercise observation therapy, which observes the movements of oneself and others.Since the active brain regions differ between self-observation and other-observation, it has been thought that the effect of motor observation differs depending on whether the left or right brain is damaged, but the details have not been clarified.
In this study, we divided 34 stroke patients into those with right hemisphere injury and those with left hemisphere injury, and examined whether exercise observation of self or others affects performance.Since exercise observation affects the image and execution of exercise, the strength of the effect was evaluated by measuring the image time and execution time of the step exercise by the non-paralyzed lower limbs before and after the observation and calculating the difference.In addition, we asked them to imagine stepping in the same way as the video during observation, and evaluated the sharpness of the image by the Kinesthetic and Visual Imagery Questionnaire (KVIQ).These endpoints were compared in the injured hemisphere and self-other observations.
As a result, in the right hemisphere injured person, the image score of KVIQ was higher in the observation by others than in the self-observation, and the difference between the image time and the execution time was large.On the other hand, in the left hemisphere injured person, the difference in image time was larger in self-observation.In the comparison between the injured hemispheres, the difference in image time was larger in the right hemisphere injured person than in the left hemisphere injured person in the observation of others.
From the above, it was shown that there is a difference in the influence of motion observation between self and others depending on the injured hemisphere.This result suggests the need to consider whether the injured side of the brain should observe the self or the other, and that the observation of the other may be more effective for the right hemisphere injured.Elucidation of the mechanism of this result is a future task.
Paper information:[Stroke Research and Treatment] Differences between the Influence of Observing One's Own Movements and Those of Others in Patients with Stroke