Electromyography: The analysis of muscle electrical activity

Slides:

Advertisements

Similar presentations

In Tune With Technology Digital Musical Tuners. What is its Purpose? Instrument tuners indicate whether the pitch of a specific note being played is sharp,

Advertisements

Muscle Function and Aging Dain LaRoche, Ph.D. JOHNSON, VERMONT STATE COLLEGE JOHNSON Introduction Muscle force and power production decrease with aging.

Depolarization of Muscle Membrane The EMG signal is derived from the depolarization of the muscle membrane. The electrodes record the sum of all of the.

Lecture 12 Electromyography EXS 587 Dr. Moran

CHAPTER 3 Measurement Systems with Electrical Signals

ENGR 518 – Experimental TechniquesENGR 518 – Experimental Techniques Katlin LandersKatlin Landers ELECTROMYOGRAPHY.

Biofeedback Jennifer L. Doherty-Restrepo Entry-level Athletic Training Education Program PET 4995: Therapeutic Modalities.

The Use of Surface Electromyography in Biomechanics by Carlo De Luca

EMG ELECTRODES. Electromyography (EMG) is a technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed.

EMG & Motor Neurons Chapter 18 KINE 3301 Biomechanics of Human Movement.

1st practice Medical Informatics Biomedical Signal Processing TAMUS, Zoltán Ádám

Muscle Activation Concepts in Electromyography. EMG n The recording of muscle action potentials (MAPs) n Recorded with surface electrodes as the MAPs.

Analog Data Processing with BioProc3 Part Two EMG Analysis Techniques.

Biomechanics of Skeletal Muscle and Electrymography n Biomechanics of skeletal muscle -Readings: Hamill pp 76-81, n Electromyography -Readings:

Mixed Signal Integrated Circuit Design

Vital Signs Monitor UConn BME 4900 Vital Signs Monitor Purpose As the population ages, many people are required by their doctors to take vital signs.

22-1 Physics I Class 22 Electric Potential Work Integral in Multiple Dimensions (Review)

1 Digitisation Conversion of a continuous electrical signal to a digitally sampled signal Analog-to-Digital Converter (ADC) Sampling rate/frequency, e.g.

Instrumentation System  A Measuring system is required to compare a quantity with a standard or to provide an output that can be related to the quantity.

MEDICAL ELECTRONICS Mr. DEEPAK P. Associate Professor ECE Department

Electromyography: Recording D. Gordon E. Robertson, Ph.D. Biomechanics Laboratory, School of Human Kinetics, University of Ottawa, Ottawa, CANADA.

LABORATORY SIX Skeletal Muscle Physiology 1. Contraction of a Skeletal Muscle Begins with electrical excitation of muscle, called a stimulus The stimulus.

Background   Who does this project addresses to?   Handicapped.   Amputated limbs.   Paralyzed.   Motivation Statistics.

Vanderbilt University Department of Biomedical Engineering Device for Quantification of Re-Innervation of a Laryngeal Muscle Advisor: Dr. David Zealear.

Engineering Lecture1: Logic Circuits & Concepts about basic Electrical Engineering Devices by Christin Sander.

ELECTROMYOGRAM Amit Sethi Pre-doc Rehab Sciences, MS OTR/L.

Biomedical Instrumentation

EMG Analysis and Interpretation

Ravi Soni MTech III Sem.  Amazing solution for those who had lost their voice but wish to speak over phone.  Developed at the Karlsruhe Institute of.

Electromyography IE 665 Dr. Sengupta. Outline Muscle Moment – Moment Arm Review of Muscle Contraction Physiology Physiological Basis of EMG Methods of.

Abstract Our client desires a device to detect the electrical activity of the bladder during the voiding process. The device will be used in a urodynamics.

Vital Signs Monitor UConn BME 4900 Vital Signs Monitor Purpose As the population ages, many people are required by their doctors to take vital signs.

Moulali.P Central Scientific Instruments Organization (CSIO), Council for Scientific and Industrial Research (CSIR), Chandigarh, India.

Electromyography (EMG)

INTRODUCTION The cell is the basic structural and functional unit of all living organism. It is the smallest unit of life, and is often called the building.

Biomechanics of Skeletal Muscle and Electroymography n Biomechanics of skeletal muscle -Readings: Hamill pp 76-81, n Electromyography -Readings:

Engineering H192 - Computer Programming Gateway Engineering Education Coalition Lab 1P. 1Winter Quarter Data Acquisition System Fundamentals Lab 1.

Electromyography Tatiana Steinwarz.

Basic Components used in Electronics. Used in electronic circuits to charge up to a given potenti al.

PROSTHETIC LEG PRESENTED BY:-AWAIS IJAZ HASNAT AHMED KHAN.

HKIN 473 Recording Motor Units. Recording Electrical Signals Muscle fiber sarcolemma action potential is very small ~ 1 millivolt. Therefore, to be able.

1. 2 The electrocardiograph (ECG) is an instrument, which records the electrical activity of the heart. Electrical signal from the heart characteristically.

Neural Electrical Impulse-Based Control [Digital] Mary Nsunwara [Presenter] Wayne Blake Reshun Gethers Thursday, January 31 st, 2002.

Electromyography E.M.G..

Introduction to the Nerve/Muscle Physiology Labs The digital oscilloscope, EMG, EKG.

Electricity within the body lect.8

Chapter 13 AC Measurements.

EMG-HUMAN MACHINE INTERFACE SYSTEM

AU Neuro Technology Lab - Research Profile

EMG 2017 Wim Grooten Quiz.

Technological Principles of Medical Instrumentation

Physiologic signals Lecture 6.

FINAL YEAR PROJECT 1 WPB49804 Development of arm gesture device

Neurophysiological Basis of Movement

Data Acquisition Systems

Chapter 8 Data Acquisition

Muscle Fatigue, Electromyography, and Wavelet Analysis (Now What?)

Electromyography E.M.G..

به نام خداوند جان و خرد کزین برتر اندیشه برنگذرد

Chapter 1 Introduction to Digital Signal Processing

INSTRUMENTASI INDUSTRI

SILENT SOUND TECHNOLOGY

Biomechanics of Skeletal Muscle and Electroymography

Electromyography E.M.G..

Biofeedback Chapter 7.

Today (4/7/16) Learning objectives: Comb basis set functions (7.9)

DEEPAK.P MEDICAL ELECTRONICS Mr. DEEPAK P. Associate Professor ECE Department SNGCE 1.

Chapter 3 Sampling.

Data Acquisition and Analysis for Sleep Architecture Study

Presentation transcript:

Electromyography: The analysis of muscle electrical activity The electromyogram Recording the Electromyogram Factors affecting electromyogram Analyzing the electromyogram Applications of electromyography

Electromyography Recording and interpreting the electrical activity of muscle’s action potential

Recording the electromyogram Electrodes – Size Number Placement Signal conduction – wires or telemetry? Signal conditioning Amplification Filtering Analog to digital conversion Integration Frequency analysis

Filtering: Effect of different cutoff frequencies on EMG

Factors affecting the electromyogram

Analyzing the EMG signal

The concept of Frequency decomposition

Converting EMG from time domain to frequency domain What is the time block, Or window over which Frequency analysis is done?

EMG in the Frequency Domain

Applications of electromyography Timing of excitation Degree of excitation Normalization procedures Muscle force-emg relationship Muscle fatigue Clinical gait analysis Ergonomics Limitations of EMG

Timing and degree of excitation

EMG-force relationship

Electromechanical delay

Windowing is a critical step in converting EMG signal from time to frequency domain

The fatigue index From EMG – Review the Assumptions Inherent in this procedure

Thank you