Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced byskeletal muscles. EMG is performed using an instrument called an electromyograph, to produce a record called anelectromyogram. An electromyograph detects the electrical potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, or recruitment order or to analyze the biomechanics of human or animal movement.(source Wikipedia).
For this project it was decided to put the electrodes on the biceps brachii, and which is a large and easier to obtain a PUM muscle.
The figure shows how to putting on muscle electrodes.
the electronic circuit is composed of an instrumentation amplifier with a high gain MCP6022, the second stage consists of two filters:
Bandpass: 300Hz - 3KHz
Rechazabanda (in my country): 60Hz
Note: #Electronica #Medica, Beginning the study of muscle electrical signals at the moment is amplified and filtered for subsequent digital processing with#Hercules # RM46, using the discrete fourier transform #FFT for analizis myoelectric signal.