Progress Seminar 2015.12.31 이준녕.

Presentation on theme: "Progress Seminar 2015.12.31 이준녕."— Presentation transcript:

1 Progress Seminar 이준녕

2 연구 진행 상황 보고서 재활의학과 응급의학과 Bepatch/CPF 2주전 계획 연구 결과 문제점 및 대책 목표 및 계획
ABT 논문 진행 PCB 제작+납땜+펌웨어 통합 알고리즘 개발 - 연구 결과 ABT 논문 통계 연구 Introduction 100% Methods 100% Results 100% Discussion 50% PCB 제작 2차 LCD 펌웨어 제작 Chemical sensor 작동 확인 문제점 및 대책 목표 및 계획 PCB Ver2 납땜 펌웨어 확인

3 재활의학과: ABT

4 ABT 문제점 Could not get a statistically significant result on the correlation between sEMG and ABT when the ABT belt was tightened Correlation: Correlation:

5 Fisher’s r-to-z transform
Compare Z scores after transformation using 5%: z>|1.96|

6 Wilcoxon Signed Rank Test

7 ABT 문제점: previous methods
sEMG vs. ABT Fisher’s r-to-z transform (group): z=0.8847, not significant Fisher’s r-to-z transform (individual): one subject w/ increase p<0.05, another subject w/ decrease p<0.1, 13 others show no significant change Wilcoxon signed rank test (individual): between 15 set of correlations p=0.1354

8 Concept: comparing sEMG and ABT may not be viable
ABT 문제점: solution Concept: comparing sEMG and ABT may not be viable sEMG also shows poor correlation with torque at times Overall, when ABT is tightened, it reflects torque output very well Torque is the final output of the muscle activity, not sEMG

9 ABT vs Torque Correlation: Correlation:

10 Wilcoxon Rank Sum Test: between ABT loose and ABT tight
ABT vs Torque Wilcoxon Rank Sum Test: between ABT loose and ABT tight p~0.95 Fisher’s r-to-z Transformation: between ABT loose and ABT tight p< WOW!

11 Wilcoxon Rank Sum Test: between sEMG loose and sEMG tight
sEMG vs Torque Wilcoxon Rank Sum Test: between sEMG loose and sEMG tight p~1 Fisher’s r-to-z Transformation: between sEMG loose and sEMG tight p<0.001 why? Training effect Correlation: Correlation:

12 Additional figures: Anomalies
Subject Correlations Z p value Loose Tight 1 0.0872 2 3 4 5 6 0.0146 7 8 9 0.0688 10 11 12 13 14 15

13 Additional figures: Anomalies
Drop in ABT while torque and EMG rises Limitation on the device structure

14 Additional figures: Anomalies
As sEMG rises, ABT decreases and vice versa… leads to extremely low correlation