Conversely, the signal median frequency (MDF) of OPM demonstrated an increasing trend in all directions and ultimately approached the MDF of the noise.
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The effect of sensor-to-source distance on magnetic neuromuscular signals.
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The sentences
For the total simulated signal (i.e., including noise), we observed a decreasing trend of the average RMS in all three directions (X, Y and Z) as the sensor-to-source distance increased.