GAMMASYS

ACTIVE ELECTRODE SYSTEM

g.GAMMAsys was designed to make experimental setups for EEG/ECG/EMG/EOG recording fast and easy, while still using a comfortable cap that provides very high signal quality. g.GAMMAsys is designed to work with all g.tec amplifiers. It includes different types of active and passive electrodes that are connected via g.GAMMAbox to g.USBamp and can be mounted with the g.GAMMAcap onto the head for EEG recordings, or can be mounted on the body for ECG/EMG/EOG recordings. The g.GAMMAcap can be configured with electrodes for a certain experiment (such as the P300 speller), and the electrodes remain inside the cap even during cleaning. This makes preparation and cleaning very fast, which speeds up experiments considerably. A typical setup time for a P300 speller experiment (10 electrodes) is about 2 minutes – just put on the cap and inject the gel. After the cap is removed, the gel almost disappears after some time, and gel is removed completely by washing the hair. 

PRODUCT HIGHLIGHTS

Avoid or reduce artefacts from movements and electromagnetic interference
Fastest electrode montage for multi-channel recordings
Flexible material, comfortable to wear; one size fits most people
System can be used instead of standard passive electrodes
No abrasive skin treatment required, just inject a drop of gel
Electrodes remain in the cap, which allows fast montage and cleaning
Single electrodes can be replaced easily
74 standard + 86 intermediate positions; user can add positions freely
0 - 10 kHz

TECHNICAL SPECIFICATIONS

Channels16
FilterDC - 10 kHz
Battery supply9V
Sockets2-pin safety

g.GAMMACAP

g.GAMMAcap is designed for maximum comfort with minimal mounting time. The fabric used for this g.GAMMAcap is very flexible, but robust. 74 labeled standard positions (based on the extended 10-20 system / 10-10 system) and 86 additional intermediate positions are precut for easy placement. This makes it easy to configure caps for certain experiments (e.g. P300 speller, SSVEP robot control, high-density brain mapping, etc.). g.GAMMAcap uses active or passive g.LADYbird electrodes and active g.SCARABEO electrodes. The g.GAMMAcap can also be used with the active dry electrode system g.SAHARA, which doesn’t require any gel. All types of active and passive electrodes can be changed or replaced if necessary. The caps can be used with a chest belt strap or with chin straps, which are supplied with each cap.

g.GAMMACAP FOR KIDS

MiniHead circumference 32 - 36 cm
MidiHead circumference 37 - 43 cm
MaxiHead circumference 44 - 48 cm

g.GAMMACAP FOR ADULTS

SmallHead circumference 50 - 54 cm
MediumHead circumference 54 - 58 cm (fits 95% of adult subjects)
LargeHead circumference 58 - 62 cm

g.SCARABEO ACTIVE ELECTRODES

g.SCARABEO electrodes are active EEG electrodes with a small form factor to support high-density recordings. The electrode is inserted into a holder ring of the g.GAMMAcap and can be easily removed and plugged into other positions to equip a cap for a certain experiment. Typically, the electrodes remain plugged in to minimize mistakes and to speed up electrode mounting. The g.SCARABEO electrodes with the holder rings can also be assembled on the body with adhesive washers for EMG, ECG or EOG recordings.

PRODUCT HIGHLIGHTS

Compact active electrode for high-density EEG and multi-purpose applications
Fully compatible with g.GAMMAsys and g.HIamp’s active headbox
Touchproof sintered Ag/AgCl-ring electrode in a durable molded housing
Super-fast and reliable setup: fill-and-ready
Usable with g.GAMMAcap or with adhesive washers
Simultaneous impedance check of all channels with g.HIamp

TECHNICAL SPECIFICATIONS

Amplification inside the electrode
1.5 kV protection cables
2-pin safety connector

g.LADYBIRD ACTIVE ELECTRODES

g.LADYbird are active EEG electrodes with a bigger reservoir for longer recordings with up to 64 channels. The electrode is inserted directly into the g.GAMMAcap and remains plugged in to minimize mistakes and to speed up electrode mounting. The g.LADYbird electrodes can also be assembled on the body with adhesive washers for EMG, ECG or EOG recordings.

PRODUCT HIGHLIGHTS

Compact active electrode for high-density EEG and multi-purpose application
Fully compatible with g.GAMMAsys and g.HIamp’s active headbox
Touchproof sintered Ag/AgCl-ring electrode in a durable molded housing
Super-fast and reliable setup: fill-and-ready
Usable with g.GAMMAcap or with adhesive washers
Simultaneous impedance check of all channels with g.HIamp

TECHNICAL SPECIFICATIONS

Amplification inside the electrode
1.5 kV protection cables
2-pin safety connector

g.GAMMACLIP ACTIVE ELECTRODES

The g.GAMMAclip contains an amplifier inside and allows you to attach disposable EMG/ECG electrodes for high quality recordings. The active electrode system greatly reduces noise produced by movements and interference with other devices, and thereby provides very high-quality data, even in challenging usage situations.

PRODUCT HIGHLIGHTS

Compact active clip for recordings with disposable electrodes
Fully compatible with g.GAMMAsys and g.HIamp’s active headbox
Super-fast and reliable setup

TECHNICAL SPECIFICATIONS

amplification inside the clip
1.5 kV protection cables
2-pin safety connector

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