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Bio-potentials and Electrophysiology Measurement
EEET0470 Biomedical Electronics Bio-potentials and Electrophysiology Measurement สุริยา วิทยาประดิษฐ์ Mobile :
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วัตถุประสงค์ รู้จักชนิดของอิเล็กโทรดกับการใช้งาน
Copyright © S.Witthayapradit 2010 รู้จักชนิดของอิเล็กโทรดกับการใช้งาน เข้าใจรูปแบบของการวัดสัญญาณไฟฟ้า เรียนรู้ลักษณะของสัญญาณไฟฟ้าจากร่างกาย การใช้สัญญาณไฟฟ้าจากร่างกายในงานอิเล็กทรอนิกส์
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Bio-Potentials Introduction to Bio-potentials
Copyright © S.Witthayapradit 2010 Introduction to Bio-potentials The Origins of Bio-potentials Electrodes for Bio-potential recordings The principles of Bio-potential Measurements
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Electrocardiogram(ECG) Electroencephalogram(EEG)
Introduction to Bio-Potentials Copyright © S.Witthayapradit 2010 Electrocardiogram(ECG) Electroencephalogram(EEG) Electromyogram(EMG) Electrooculogram(EOG)
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Introduction to Bio-Potentials
Copyright © S.Witthayapradit 2010
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The Origins of Bio-Potentials
Copyright © S.Witthayapradit 2010 Electrocardiogram(ECG) Electroencephalogram(EEG) Electromyogram(EMG) Electrooculogram(EOG)
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Schematics of Bio-Potentials
Copyright © S.Witthayapradit 2010
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Electrode Copyright © S.Witthayapradit 2010
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Suction Electrode Copyright © S.Witthayapradit 2010
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Floating Electrode Copyright © S.Witthayapradit 2010
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Needle Electrode Copyright © S.Witthayapradit 2010
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Fetal ECG Electrode Copyright © S.Witthayapradit 2010
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Electrode Arrays Copyright © S.Witthayapradit 2010
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MEMs Electrode Copyright © S.Witthayapradit 2010
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010 Heart cell Heart muscle Chest
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010 Augustus Desiré Waller capillary electrometer cardinal leads Willem Einthoven string galvanometer Einthoven limb leads (standard leads)
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010 Frank Norman Wilson ( ) unipolar potentials central terminal
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010 GOLDBERGER AUGMENTED LEADS
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010 PRECORDIAL LEADS (chest leads)
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010
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Electrocardiogram(ECG)
Copyright © S.Witthayapradit 2010
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Electroencephalogram(EEG)
Copyright © S.Witthayapradit 2010 Hans Berger [ ]
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Electroencephalogram(EEG)
Copyright © S.Witthayapradit 2010
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Electroencephalogram(EEG)
Copyright © S.Witthayapradit 2010
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Electroencephalogram(EEG)
Copyright © S.Witthayapradit 2010
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Electromyogram(EMG) Copyright © S.Witthayapradit 2010
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Electromyogram(EMG) Copyright © S.Witthayapradit 2010
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Electromyogram(EMG) Remove any DC offset of the signal y2=detrend(y);
Copyright © S.Witthayapradit 2010 y=load('emg.txt'); plot(y) xlabel('Sample number') ylabel('EMG signal') Remove any DC offset of the signal y2=detrend(y); Rectification of the EMG signal rec_y=abs(y2); plot(rec_y) xlabel('Sample number') ylabel('Rectified EMG signal')
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Electromyogram(EMG) [b,a]=butter(5,10/1000,'low');
Copyright © S.Witthayapradit 2010 [b,a]=butter(5,10/1000,'low'); filter_y=filtfilt(b,a,rec_y); plot(filter_y) xlabel('Sample number') ylabel('Low Pass Filtered EMG signal') Fourier Transform of the EMG signals mf=psanalyse(y2,1000)
![Electromyogram(EMG) [b,a]=butter(5,10/1000, low );](http://slideplayer.in.th/slide/1963363/8/images/30/Electromyogram%28EMG%29+%5Bb%2Ca%5D%3Dbutter%285%2C10%2F1000%2C+low+%29%3B.jpg "Copyright © S.Witthayapradit [b,a]=butter(5,10/1000, low ); filter_y=filtfilt(b,a,rec_y); plot(filter_y) xlabel( Sample number ) ylabel( Low Pass Filtered EMG signal ) Fourier Transform of the EMG signals. mf=psanalyse(y2,1000)")
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Electromyogram(EMG) Medical Instrumentation: Application And Design
Copyright © S.Witthayapradit 2010 Medical Instrumentation: Application And Design By John Webster
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Electrooculogram(EOG)
Copyright © S.Witthayapradit 2010
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Electrooculogram(EOG)
Copyright © S.Witthayapradit 2010 The Ocular-Movement-Controlled Mouse is the invention of DeVry Institute of Technology, David Dorflinger and Scott McKee.
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Bio-potentials Specifications
Copyright © S.Witthayapradit 2010 Medical Instrumentation: Application And Design By John Webster
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Bio-potentials Specifications
Copyright © S.Witthayapradit 2010 Measurement, Instrumentation, and Sensors Handbook By John Webster
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Bio-potentials Specifications
Copyright © S.Witthayapradit 2010
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Reference Copyright © S.Witthayapradit 2010 [1] John G.Webster , “Medical Instrumentation Application and Design” , Third edition , JOHN WILET & SONS. ,1998. [2] John G.Webster , “Measurement, Instrumentation, and Sensors Handbook” , CRC Press Inc. , 1999. [3] Robert B.Northrop , “Analysis and Application of Analog Electronic Circuits to Biomedical Instrumentation” , CRC Press , 2003. [4] Jaakko Malmivuo , Robert Plonsey ,” Bioelectromagnetism “ , OXFORD UNIVERSITY PRESS , 1995.
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Bio-potentials and Electrophysiology Measurement
EEET0470 Biomedical Electronics Bio-potentials and Electrophysiology Measurement The End Q & A สุริยา วิทยาประดิษฐ์ Mobile :
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Exercises สัญญาณขั้วไฟฟ้าของร่างกายมีอะไรบ้าง
Copyright © S.Witthayapradit 2010 สัญญาณขั้วไฟฟ้าของร่างกายมีอะไรบ้าง การวัดสัญญาณคลื่นไฟฟ้าหัวใจแบบขั้วเดี่ยว ประกอบด้วยแรงดันอะไรบ้าง Central Terminal คืออะไร Augmented leads คืออะไร
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