Why Research Muscle Control?

Nearly all functional tasks in day-to-day life depend on a person’s ability to generate force. For example, when they are healthy muscles enable people to eat, breathe and move. But when they malfunction, the result is decreased strength that cripples millions of people worldwide. If exercised, their performance can improve. Yet the way that we control our muscles remains poorly understood…until now.

Introducing Delsys dEMG

A refined system for the sophisticated EMG user

Stay up to date on contemporary perspectives of dEMG in our latest blog post:

“The Advantage of Delsys dEMG”

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What is dEMG?

Transform surface EMG signals to Motoneuron Firing Behavior

Transform surface EMG signals to Motoneuron Firing Behavior

The dEMG System is specially designed to record the motor unit action potentials in the surface EMG signal. The system applies sophisticated artificial intelligence algorithms to extract these action potentials from the sEMG signal in a process referred to as EMG decomposition, dEMG. The end result provides a window into the neural activity that regulates muscle contractions.

 

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Why use dEMG?

  • Research the workings of the motor control system
  • See how motoneuron activity can be optimized to improve athletic performance.
  • Unmask the neural mechanisms of aging, injury or illness affecting millions of people worldwide.
  • Revolutionize practices of rehabilitation by restoring neuromuscular control.

The dEMG System comes complete with dEMG Analysis 1.0 to help you visualize motoneuron firing behavior, analyze trends across various experimental conditions and generate publication-quality figures. Use dEMG to advance the frontier of research in the movement sciences.

 

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About the dEMG Analysis Software

Specifications

Hardware Components dEMG array sensors
DE-2.1 sEMG sensors
Load cell
Bagnoli amplifier
Software Components EMGworks dEMG Acquisition
dEMG Algorithms
dEMG MU Analysis
Inputs (Data Collected) sEMG signals
Contraction feedback
Outputs (Data Generated) Motor unit action potential shapes
Motor unit firing instances
Decomposition accuracy value
Yields up to 50+ detected motor units
Signal Quality Check Integrated, automatic
Method of Motor Unit Measurement Non-invasive
Supported Force Range >0% – 80% Maximal Voluntary Contraction
Supported Force Rate 5%-20% MVC/s
Supported Constant-Force Duration 10-52 s
Supported dEMG Sensors Up to 2
Supported sEMG or Auxiliary Sensors Up to 8
Supported Feedback Mode Force or EMG Root-Mean-Square Biofeedback
Minimum sEMG Signal-to-Noise Ratio 3:1
Minimum Begin and End Baseline Duration 3 s
Motor Units Detected 20-50+
Decomposition Procedure Fully Automatic
Decomposition Processing Performance Multi-core parallel processing
Validation Procedure Fully Automatic
Decomposition Time 2 s per Motor Unit/s of Data
Motor Unit Data Visualization MU action potential shapes
MU firing instances
Decomposition accuracy
MU firing rates
Statistical Analysis Inter-pulse intervals
Firing normality
Firing stationarity
Histograms
Regression Analysis Firing rates
Recruitment thresholds
Inter-pulse intervals
Compliance Check Integrated, automatic
Data Visualization Up to 20 data sets at a time
Data Export Text Files
Inter-Electrode Spacing 5 mm
Case Dimension 41 x 20 x 5 mm
Number of Channels 4 single differential EMG channels
Cable Length 1.67 m
Case Material Polycarbonate plastic
Dimensions 89 x 83 x 32 mm
Weight 100 g
Cable Length 7.62 m (up to 15 m)
Cable Diameter 6.5 mm
Number of Channels 16 analog
dEMG Sampling Rate 20 kHz
dEMG Amplification 1000 ± 1%
Overall Amplification per Channel 0, 100, 1000, 10000, Custom (AUX setting)
Max Output Voltage Range ± 5 V
Channel Frequency Response 20±5 to 450±50 Hz, 80 dB/decade
 System Noise (R.T.I.)  ≤ 1.2 µV (rms)
 Channel Output Isolation  3750 V (rms) for the specified bandwidth
 Output Signal Connectors  16 BNC connectors
68-pin 0.05’’ pitch high-density D-Sub male
 Signal Quality Check Line Frequency Interference (50 or 60 Hz)
Channel Saturation Check (± 4.8 V threshold)
 Signal Quality Warnings Yellow LED
Selectable Audio Buzzer
 Operating Temperature  15° C to 40° C
 Case Dimensions  406 mm x 152 mm x 70 mm
 Weight  2.1 kg
 Power Requirements  2500 mW (± 6 V)
Minimum Recommended
Operating System 64-bit Windows Vista 64-bit Windows 7
Processor 2 GHz Dual Core 3 GHz Quad Core (Intel® i7)
RAM 4 GB 8 GB
Hard Drive 250 GB 1 TB
Monitor Resolution 1280 x 1024 1920 x 1200
Graphic Card 256 MB of VRAM 1 GB of VRAM
Windows Experience Index 4.0 5.5

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