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g.tec medical engineering · Amplifiers and electrodes

g.SCARABEO

Active EEG / EMG / EOG electrodes

Every EEG recording depends on the quality of the electrode. g.SCARABEO active EEG electrodes integrate a miniature preamplifier inside each electrode, reducing artefacts and interference before the signal travels through the cable. The sintered Ag/AgCl surface stays stable in long recordings, the compact build suits high-density EEG, and because the electrodes stay in the cap, set-up is fast and experiments are reproducible.

  • Active, gel-based
  • Sintered Ag/AgCl
  • 16–256 channels
  • EEG · EMG · ECG · EOG
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A g.SCARABEO active EEG electrode with holder rings

Highlights

  • Active electrode with an integrated preamplifier for superior EEG signal quality
  • Reduces cable movement artefacts and 50/60 Hz interference
  • No abrasive skin preparation required
  • Compact design for high-density EEG recordings
  • Active sintered Ag/AgCl recording surface for stable long-term recordings
  • Compatible with the g.GAMMAcap and custom electrode layouts
  • Electrodes stay mounted in the cap for faster set-up and reproducible experiments
  • Easily removable holder-ring design for flexible configurations
  • Supports EEG, EMG, ECG and EOG recordings
  • Compatible with g.GAMMAsys and g.HIamp active electrode connector boxes
  • Internal impedance verification with g.HIamp using the g.SCARABEO Z electrode
  • For 16–256 channel EEG systems

Technical specifications

Electrode type
Active wet EEG electrode
Electrode material
Sintered Ag/AgCl
Integrated amplification
Yes
Electrode housing
Compact moulded housing
High-density EEG
Yes
Compatible cap
g.GAMMAcap2 (with removable holder rings)
Recording modalities
EEG · EMG · ECG · EOG
Compatible amplifiers
g.GAMMAsys · g.HIamp
Connector
2-pin touch-proof safety connector
Impedance verification
With g.HIamp, using the g.SCARABEO Z electrode
Isolation
1.5 kV
Channels
16–256 channel EEG systems
Related products
g.GAMMAbox (for g.USBamp) · g.GAMMAclip (active clips for EMG/ECG/EOG)
Active electrode

The signal is cleaned before it enters the cable

EEG recording with g.SCARABEO electrodes in a g.GAMMAcap

Each g.SCARABEO electrode holds a miniature preamplifier. Because the signal is amplified at its source, cable movement artefacts and 50/60 Hz mains interference are reduced before it travels through the cable. Light electrodes reduce motion artefacts, the electrode spacing keeps bridging to a minimum, and recordings stay stable through long experiments. Designed for laboratory and real-world neuroscience.

  • Light electrodes
  • Little bridging
  • Stable long recordings
  • Laboratory and real world
Set-up

64 channels in about five minutes

g.SCARABEO electrodes with the g.GAMMAcap and g.Nautilus

A streamlined application places 64 channels in about five minutes and gives artefact-free data, a significant step forward in usability. No abrasive skin preparation is needed. Electrodes stay mounted in the cap, so set-up is faster and experiments reproducible, and the easily removable holder rings allow custom electrode layouts too.

  • 64 channels in ~5 minutes
  • No abrasion
  • Removable holder rings
Cap sizes

g.GAMMAcap: from children to adults

g.GAMMAcap caps in several sizes with accessories

g.SCARABEO electrodes are used in the g.GAMMAcap2. For children there are Mini (32–36 cm), Midi (37–43 cm) and Maxi (44–48 cm); for adults, Small (50–54 cm), Medium (54–58 cm, fits 95% of adult participants) and Large (58–62 cm).

  • Mini · Midi · Maxi
  • Small · Medium · Large
Beyond EEG

EMG, ECG and EOG in the same system

Recording with an EEG cap and EMG electrodes on the arm

g.SCARABEO is used not only for EEG but for EMG, ECG and EOG recordings too. g.GAMMAclip active physiological electrode clips take the body signals, and the g.GAMMAbox connector box links the electrodes to g.USBamp. The electrodes work with the g.GAMMAsys and g.HIamp active electrode boxes; with g.HIamp, impedance is verified through the g.SCARABEO Z electrode.

  • g.GAMMAclip
  • g.GAMMAbox
  • g.GAMMAsys
  • g.HIamp
Example study

A 16-day neurofeedback and motor imagery dataset

In one study, the EEG of 29 participants was recorded with a 32-channel g.Nautilus Pro Flexible fitted with g.SCARABEO electrodes, at 250 Hz, through a 16-day neurofeedback and motor imagery intervention. The resulting dataset was released openly for research on neurofeedback, motor imagery, decoding accuracy and PTSD-related interventions.

  • 29 participants
  • 32 channels · 250 Hz
  • 16 days
  • Open dataset

Applications

Up close

g.SCARABEO electrodes with their cables and holder rings
g.SCARABEO electrodes connected to g.Nautilus
g.tec
Contact

Let's plan your project together.

Talk to our team about device selection, protocol design, installation and software integration. We will work out the technical configuration that best fits your research or clinical goal.

Request a quote

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