A. Teklemariam
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View article: The 16 wavelets set in the frequency domain.
The 16 wavelets set in the frequency domain. Open
The sum of the wavelet (thick line) gives the total band of the filter. Each peak is the central frequency of the single wavelet.
View article: Total Power expressed as percentage of the source signal total power.
Total Power expressed as percentage of the source signal total power. Open
(Top) Total power for different IED, showing a positive linear trend as the distance is increasing (Bottom) Total Power at different orientation, showing a decay as the electrodes alignment deviate from 0° to 90°.
View article: Mean Power of the bipolar signal in the pennated case.
Mean Power of the bipolar signal in the pennated case. Open
(Top) The mean power at different pennation is low pass filtered and the amplitude increase as the pennation decrease. (Bottom) Mean power for the pennated case at 20° while changing the IED (15,20,25,30 mm). There is an enhanced peak for …
View article: Representations of some of the bipolar configurations simulated, showing:.
Representations of some of the bipolar configurations simulated, showing:. Open
A) inter-electrode distances (mm); B) electrodes orientation (Degree); C) fibre pennation angle (Degree). The signal travels along the horizontal plane in the muscle tissue at a depth of 20 mm. For the pennated case, the plane is inclined …
View article: The source signal power in time and frequency domain.
The source signal power in time and frequency domain. Open
The 1 sec sample from intramuscular signal that was used as source signal is shown at the top (A). The total power of this signal is shown in the time domain (B) and in the frequency-time domain (C). From this plot it is possible to distin…
View article: Mean Power of the bipolar signal in the frequency domain.
Mean Power of the bipolar signal in the frequency domain. Open
The general trend reveal a band stop filtering in the range 92–542 Hz (Top) Mean power at different IED. As the distance increases, the mean power increases as well. (Bottom) Mean power at different orientations. As the electrodes deviate …
View article: The source signal mean power.
The source signal mean power. Open
The source signal mean power over 1 sec calculated for each frequency component of the source signal.
View article: Total Power of the bipolar configuration.
Total Power of the bipolar configuration. Open
(Top) Total power at different fibre pennation angles. There is a linear decrease of the power as the pennation increase for a fixed IED of 20 mm. (Bottom) Total Power for a pennated model at 20° while changing the IED. The increase in the…
View article: A Finite Element Model Approach to Determine the Influence of Electrode Design and Muscle Architecture on Myoelectric Signal Properties
A Finite Element Model Approach to Determine the Influence of Electrode Design and Muscle Architecture on Myoelectric Signal Properties Open
Differences in tissue filtering properties, shown in our model, indicates that different electrode designs should be considered for muscle with different geometric properties (i.e. pennated muscles).
View article: A finite element approach to study skeletal muscle tissue
A finite element approach to study skeletal muscle tissue Open
This dissertation investigates force generation in muscle using a finite element (FE) approach to model electrical activity and mechanical force production within skeletal muscle. The work proposes new FE models design/formulations to answ…