Motor unit tracking using blind source separation filters and waveform cross-correlations: reliability under physiological and pharmacological conditions
Benjamin I. Goodlich, Alessandro Del Vecchio, Justin J. Kavanagh
Abstract
The most direct way to validate longitudinal tracking of motor unit data extracted from high-density surface electromyography is to contrast findings with intramuscular electromyography. We used pharmacology to induce changes in motor unit discharge properties as a noninvasive alternative to validate the reliability of tracking motor units. This study confirmed that the specific tracking method may not impact interpretation of motor unit data at lower contraction intensities; however, caution should be used when tracking units during higher intensities.
Topics & Concepts
Isometric exerciseIntraclass correlationWaveformReliability (semiconductor)ElectromyographyBiomedical engineeringMedicineReproducibilityComputer sciencePhysical medicine and rehabilitationStatisticsMathematicsInternal medicinePhysicsPower (physics)TelecommunicationsQuantum mechanicsRadarMuscle activation and electromyography studiesEEG and Brain-Computer InterfacesHeart Rate Variability and Autonomic Control