Available Operations - Noraxon TeleMyo DTS Operating Document

shape, depending on which analysis protocol you decide to use. Typically, stored EMG
data is processed by several signal processing methods such as rectification, smoothing
and normalization before an analysis is started (exception: frequency based analysis types).
Any signal can be restored to its original raw status.
Five Signal Processing methods, listed under Available Operations, can be loaded in
a sequence of Selected Operations. You can create any sequence and order of processing
methods and even load them several times if needed. N.B. The order in which you Insert the
Available Operations is the order in which the signal will be processed.

5.2.4 Available Operations

Rectification: This very popular processing method takes the absolute value of all
amplitude values, making all negative values positive. The reason for this operation is to
achieve positive amplitude curves that allow the user to calculate parameters like mean
amplitude, area under the curve, etc.
Smoothing: Typically, for amplitude based calculations and analysis, the raw EMG
is smoothed by digital filters, root mean square or moving average algorithms. The result
is non-reproducible EMG spikes are eliminated and the mean trend of the EMG enervation
is used. As described previously, another benefit is the easier reading of EMG patterns
which is useful for clinical tests, biofeedback oriented treatments or training.
The following smoothing Algorithms are supported:
1. RMS: Root Mean Square
2. Mean: the moving average
3. Mean absolute: the moving average with combined rectification
Window: allows the user to define the millisecond-based window for each algorithm.
Amplitude Normalization: 5 normalization routines are available in the pull down list
of the control Normalize to:
PC-POD-FA-001-v02 Printed copies are not controlled.
PC-POD-FA-001-v02
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