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KMID : 1003120110030010021
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Journal of Korean Society of Neurocognitive Rehabilitation
2011 Volume.3 No. 1 p.21 ~ p.30
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Comparison of Capability of Healthy People and Patients with Stroke to Recognize the Position of Point in Space
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Kim Sun-Hee
Lee Hyang-Sook
Moon Young-Ju
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Abstract
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Objective: The objective of this study is to determine whether the reaction time was different depending on Euclidean coordinates and polar coordinates with a target of normal people and patients with hemiplegia, and to examine the difference in capability to recognize the position of the point in space.
Methods: A total of 37 people including 10 normal people and 27 patients with hemiplegia were subjects in this study. Statistical analysis was carried out by using SPSS version 18.0 program for windows, Reaction times of Euclidean coordinates and polalr coordinates were compared by using independent sample t-test.
Results: Reaction time was longer when experiment was carried out with polar coordinates compared to the experiment with Euclidean coordinate upon comparing normal peeople and patients. When normal people and patients with stroke were compared, the patients with stroke had slow reaction time compared to normal people. As a result comparison of reaction time for capability to recognize the point in space, in Euclidean coordinates, showed the statistically significant difference(p<0.01) and in polar coordinates, showed the statistically significant difference(p<0.01). Upon comparing error rates, both groups showed the significant difference in Euclidean coordinates and polar coordinates.
Conclusion: This study showed that the reaction time to recognize the position of the point in space was more in patients with stroke compared to normal people. Also it showed that time was spent upon performing the polar coordinates compared to Euclidean coordinates. Therefore, we would like to provide the materials which will be basis to determine the task difficulty upon the interventions of occupational therapy by comparing the difference in capability to recognize the position of the point in space with groups of normal people and patients with stroke.
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KEYWORD
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Euclidean coordinates, Polar coordinates, Reaction time, Space perception, Stroke
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