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Validation of Fitts' Law with stroke patients' reaching task ; potential application in robot-aided upper limb rehabilitation

Validation of Fitts' Law with stroke patients' reaching task ; potential application in robot-aided upper limb rehabilitation
Translated Title
뇌졸중 환자의 도달 운동을 통한 피츠의 법칙 검증; 로봇 기반 상지 재활의 가능성 있는 응용
Kim, Jong Bum
DGIST Authors
Kim, Jong Bum; Kim, Jong Hyun
Kim, Jong Hyun
Jang, Sung Ho
Issue Date
Available Date
Degree Date
2015. 8
reaching taskFitts’ Lawrobot-aidedrehabilitationstroke피츠의 법칙도달운동로봇기반재활뇌졸중
This study deal with validation of fitts’ law with stroke patients’ reaching task. Fitts’ Law is a linear re-lationship between movement time from start position to target position and Index of Difficulty (ID). ID is consisted of distance from start position to target position (A) and target width (W). Fitts’ Law is a one-dimensional model of reaching movement, is commonly applied to two-dimensional reaching movement. By using fitts’ law, it is possible to indicate the performance of reaching movement quantitatively. If fitts’ law can be applied to stroke patients, it is easy to evaluate their reaching movement. It is possible to know intuitively by comparing between before therapy and after therapy, therefore it is comfortable method to assess stroke patients’ reaching performance. It has advantage that therapy and assessment can be done at the same time by changing ID. Also, there are various possible targets in same ID in order to provide person-alized therapy to patients and the interest subjects and prevent the feeling of boredom and learning effect. ⓒ 2015 DGIST
Table Of Contents
Ⅰ. INTRODUCTION 1-- 1.1 Background 1-- 1.2 Fitts’ Law 3-- 1.2.1 Extending Fitts’ law to two dimensional space 3-- 1.3 Goal of the study 4-- Ⅱ. METHOD 5-- 2.1 Participants 5-- 2.2 Apparatus 5-- 2.2.1 Haptic Master 5-- 2.2.2 Trunk fixed Chair 7-- 2.3 Experimental Protocol 7-- 2.4 Data Analysis 8-- Ⅲ. RESULT 9-- 3.1 Healthy Subjects 9-- 3.1.1 Validation of Fitts’ Law 9-- 3.1.2 Difference among directions 11-- 3.2 Stroke Patients 13-- 3.2.1 Change of r^2 as experiment was repeated 13-- 3.2.2 Change of r^2 along directions 18-- 3.2.3 Change of movement time along directions 22-- Ⅳ. DISCUSSION 26-- 4.1 Healthy Subjects 26-- 4.2 Stroke Patients 26-- Ⅴ. CONCLUSION 31
Robotics Engineering
Related Researcher
  • Author Kim, Jonghyun REL(Rehabilitation Engineering Laboratory)
  • Research Interests Rehabilitation engineering; Robotics; Nonlinear control
Department of Robotics EngineeringThesesMaster

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