Soterix Medical MEGA-EMG

The Soterix Medical MEGA-EMG provides an all-in-one digital system


With options for up to 4 or 8 acquisition channels, built-in stimulators, and unique, easy-to-use software, MEGA-EMG can be used to perform almost all known electromyography (EMG), evoked potential (EP), and nerve conduction studies (NCS), including:

  • NCS Motor and sensory conduction velocity, F-wave, H-reflex, motor and sensory inching, motor and sensory conduction collision
  • EMG Spontaneous activity, interference curve, Motor Unit Potentials (MUP), macro EMG
  • Motor Unit Number Estimation (MUNE)
  • Neuromuscular junction
  • Additional EMG Tests: blink reflex, sacral reflex, bulbocavernosus reflex, T-reflex*, Galvanic Skin Response, long loop (transcortical) reflexes
  • Somatosensory Evoked Potentials (SEP)
  • Visual Evoked Potentials (VEP)
  • Auditory Evoked Potentials (AEP)
  • Vestibular Evoked Myogenic Potentials (VEMP)
  • Cognitive Evoked Potentials (P300, MMN, CNV, MRCP, P50)
  • Transcranial Magnetic Stimulation (TMS)**
  • Electroretinography (ERG)***
  • Heart Rate Variability (HRV)***
  • Intraoperative Neurophysiological Monitoring (IONM)

* if tendon hammer is available
** if magnetic stimulator is available
*** if corresponding equipment is available

Watch our Demo

Experience the cutting-edge capabilities of Soterix Medical's MEGA-EMG system, employed to precisely measure contralateral silent periods induced by our state of the art MEGA-TMS system. Join us as we delve into groundbreaking research, investigating the fascinating realm of M1 corticospinal inhibition. Witness the seamless integration of these advanced technologies, shedding light on the intricate neural processes underlying motor control and cortical-spinal interactions.

Modular Architecture

Optional Stimulators


The delivery set of MEGA-EMG systems includes the amplifier unit with the option to add an electrical stimulator-control unit and an auditory-visual stimulator unit to control an auditory stimulator, a pattern stimulator, and a visual stimulator (LED goggles).


  • Available in 4 or 8 channel configurations optimized to quickly perform motor and sensory conduction tests.
  • High acquisition quality: A sampling frequency of up to 160 kHz allows recording of high quality traces other devices are unable to detect.
  • Low noise, quick artifact rejection and perfect interference immunity.
  • Modular architecture: Select a configuration of available amplifiers and stimulators flexible enough to meet any clinical demands.
  • All electronic units connect to a computer via USB interface, allowing for connection of up to 10 units.
  • Portable and ergonomic design: a dedicated keyboard and footswitch greatly simplifies the process of EMG study.
  • Includes state of the art, easy to use software, Neuro-MEP.NET.

State of the art software (NEURO-MEP.NET)

State-of-the art software (NEURO-MEP.NET)

Software includes:

  • Dozens of default templates to study motor and sensory conduction in most nerves accessible for stimulation
  • A help window that displays correct placement of recording, ground and stimulating electrodes
  • Acquisition and analysis of spontaneous EMG activity, interference pattern, and MUP in one window
  • A breakthrough algorithm for automatic jitter detection
  • Ability to perform motor and sensory conduction collision tests using two electrical stimulation channels
  • Automatic detection of the main components of evoked potentials during acquisition of SEPs from different sites
  • Report generation upon study completion that include patient's data, tables, graphs and native traces obtained during the tests and can be edited easily and customized according to individual demands


Number of Channels: 4 or 8
Voltage Range: 20 µV - 50 mV
Interface: USB
Supply Voltage:
Electronic Units: 5 V DC
Desktop PC-Based System:

220/230 V AC (50 Hz)

110 V AC (60 Hz)

Notebook PC-Based System:

220/230 V AC (50 Hz)

110 V AC (60 Hz)/ int. battery

Amplifier Unit: (190×140×50) ± 2 mm
Auditory-Visual Stimulator Unit: (155×105×40) ± 2 mm
Electrical Stimulator Control Unit: (155×105×40) ± 2 mm
Amplifier Unit: (1.98 ± 0.11) lbs
Auditory-Visual Stimulator Unit: (1.54 ± 0.11) lbs
Electrical Stimulator Control Unit: (1.54 ± 0.11) lbs