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Bioelectrical signal are the signals originating with the body of a creature because of motion of body
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Bioelectrical Signal Analysis
What these are?Biomedical engineering is a discipline
concerned with the development and
manufacture of prostheses, medical devices,
diagnostic devices, drugs etc. And all these
require bioelectrical signals. These
bioelectrical signals are typically very small in
amplitude and require amplification to
accurately record, display and analyze the
signals
Measurement (Equipments)
heart (electrocardiogram/ECG);
muscles (electromyograph/EMG);
skin (Galvanic skin response/GSR);
scalp (electroencephalograph/EEG);
eyes (electrooculogram/EOG
Importance of Biosignals
Diagnosis
Patient monitoring
Biomedical research
Characteristics of Biosignals
Often hidden in a background of other signals and noise components.
Generated by highly complex and dynamic biological processes with parameters usually more than a few and varying continuously
Signal Conditioning
Biosignal Processing
In order to derive the required information from the bio signals:
-Disturbance should be filtered out
-The amount of data should be reduced by discriminating only the most significant ones related with the required information
Stages of Biosignal Processing
Signal acquisition Transformation and reduction of the
signals Computation of signal parameters that
are diagnostically significant Interpretation or classification of the
signals
Application of Biosignal Analysis
In ICUs integrating signals from multiple sourcespresenting information in the most appropriate form interpreting variations over prolonged time periods learning and recognizing profiles triggering “intelligent” alarms
Application Areas of Biosignal Analysis
Biosignals offer parameters that support medical decision making and trend analysis.
Bio signal analysis techniques help to extract these parameters accurately, analyze and interpret them objectively.
Applications of EMG 11
Applications of EMG in Ergonomics
► ANALYSIS OF DESIGN.
► RISK PREVENTION.
► ERGONOMIC DESIGN.
► PRODUCT CERTIFICATION.
12
Applications of EMG in Medical Research
►EMG helps to improve
the medical research
studies by detecting
activity levels in muscles
and quickly identifying
muscle dysfunction.
13
Applications of EMG in Medical Research
►FUNCTIONAL NEUROLOGY
►GAIT AND POSTURE ANALYSIS
►PROSTHETIC DEVICES
►ORTHOPEDICS
►SURGERY
14
EMG For A Robotic Hand
Figure shows the highly integrated approach to use EMG recording of the human lower arm in order to control the opening and closing of three fingers of the hand.
15
Applications of EMG in Sports Science
► Biomechanics is the
scientific study of forces
and the effects of those
forces on and within the
human body.
16
Thanks…………