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Research  Vibromyography - VMG  VMG Systems  

4-CHANNEL VMG SYSTEM WITH MP150WS - VMG104WS

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VMG TSD250 MEMS Accelerometer

The VMG104WS is a complete system for muscle monitoring using Vibromyography. It includes an MP150 data acquisition and analysis system (Windows OS) with VMG analysis filters and four TSD250 VMG transducers.

The system uses sensitive microelectromechanical (MEMS) accelerometers and advanced signal analysis algorithms to monitor muscle vibration. The technique allows researchers to study muscle performance and strength balance.

The accelerometers are placed over the muscle belly and secured to record the small vibrations that occur when the muscle is activated. AcqKnowledge software uses wavelet packet analysis to extract the vibrational components that correlate with the effort generated by the muscle being studied. AcqKnowledge includes automated VMG analysis filters to simplify the analysis process.

VMG provides extremely reproducible results. The single sensor solution and the lack of skin preparation improve the reliability and reproducibility of muscle effort recordings between muscles and across subjects.  One major benefit of being able to compare readings between muscles and between subjects is the ability to perform muscle balance assessments.

Benefits
  • Ability to perform muscle balance assessments
  • Improved reproducibility between muscles and individuals
  • Convenient setup
  • Reduced setup time
  • Improved subject comfort
  • No electrodes
  • No skin preparation
Complete Systems                                     WSW Win or WS Mac
2-Channel VMG System with MP150         VMG102WSW or WS
2-Channel VMG System with MP36R         VMG36R2WSW or WS 
4-Channel VMG System with MP150         VMG104WSW or WS
4-Channel VMG System with MP36R         VMG36R4WSW or WS
 
Transducer & Software Packs                  -W Win or -M Mac
Use if you already have a compatible BIOPAC data acquisition system
VMG for MP150WSW or WS                    VMG150PACK-W or -M
VMG for MP36RWSW or WS                    VMG36RPACK-W or -M

 


The VMG transducer (with Sonostics BPS-II sensor) integrates a low noise accelerometer with low and high pass filtering and pre-amplification. The transducer operates in differential mode in order to achieve superior noise reduction, delivering two channels of vibration data along a three meter cable to a converter unit which both converts the signal to single-ended mode and adapts the VMG signal appropriately for use with the BIOPAC research platforms.

Sensor

Operational Frequency Range: 20-360 Hz
Input range: ±2 Volts
Sensitivity: 30 V/g (MP150), 0.6 V/g (MP36R)
Noise Floor: 8 mV rms (MP150), 0.8 mV rms (MP36R)
Temperature range: -55C to +125C
Maximum Shock: 2000 g
Voltage output: ±10 V (MP150), ±0.2 V (MP36R)
Type: Sonostics VMG BPS-II

Cable

Length: 3 meters
Termination: RJ-25 connector (MP150), 9-pin connector (MP36R)
Specifications Recommended Items Knowledge Base Resources
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