PASSIVE EEG ELECTRODES FOR TMS RECORDINGS
Improve TMS-EEG signal quality with the 3 mm passive g.LADYbird electrode. 3 mm ultra-flat passive EEG electrodes optimized for TMS-EEG experiments with fast post-pulse signal stabilization.
ADVANCED TMS-EEG INTEGRATION
The passive g.LADYbird TMS-EEG electrodes are specifically designed for combined EEG and TMS recordings. Their ultra-flat design with only 3 mm thickness makes them ideal for TMS-EEG setups, working seamlessly with the g.GAMMAcap³ or double-sided adhesive washers when used with g.GAMMAgel or conductive paste.
Due to their extremely low profile, the TMS coil can be positioned closer to the brain, improving stimulation efficiency and reducing required stimulation intensity. The compact electrode material is significantly smaller than conventional C-shaped TMS electrodes, helping minimize stimulation artifacts.
The passive g.LADYbird electrodes use sintered Ag/AgCl electrode material to ensure stable impedance and optimal EEG signal quality across a wide frequency range from 0 to 10 kHz.
| Optimized for combined EEG and TMS recordings |
| Minimal stimulation artifacts due to passive design |
| Ultra-flat 3 mm height allows closer coil positioning |
| Fast signal recovery within milliseconds after TMS pulse |
| Reliable impedance stability using sintered Ag/AgCl material |
| Ideal for short-latency EP recordings |
| Compatible with g.GAMMAcap³ electrode layouts |
| Electrodes remain mounted in the cap for faster setup |
| Easy cleaning and replacement of individual electrodes |
| 0 – 10 kHz frequency response |
| Simultaneous impedance check of all channels with g.HIamp |
| Amplification | Inside the electrode |
| Type | Extra-low profile |
| Material | AG/AgCI |
| Sockets | 2-pin safety |
| Cable | 1.5 kV isolation |
| Height | 3 mm |
| Diameter electrode | 18 mm |
| Preparation opening | 8 mm hole for skin preparation |
| Cable length | 120 cm |
| Connector | 1.5 mm touchroof safety connector |
PASSIVE g.LADYBIRD TMS ELECTRODES
The passive g.LADYbird TMS electrodes are optimized for minimal artifact generation and fast EEG signal recovery after TMS stimulation. Without integrated electronics, the electrode design reduces electromagnetic interference and allows stable recordings shortly after the stimulation pulse.
With a thickness of only 3 mm, the electrode enables close positioning of the TMS coil to the scalp. This improves stimulation efficiency and may reduce required stimulation intensity. The electrodes remain securely positioned within the cap, enabling fast preparation, reproducible electrode placement, and simplified cleaning procedures.
CLOSED-LOOP EEG-TMS RECORDINGS
The passive g.LADYbird electrodes integrate seamlessly into closed-loop TMS-EEG paradigms using g.HIamp and g.HIsys Professional. The high signal quality and rapid recovery characteristics support advanced neuroscience applications requiring precise timing and minimal stimulation artifacts.
ULTRA-FLAT 3 MM ELECTRODE FOR SLEEP RESEARCH
The passive g.LADYbird TMS-EEG electrode is designed for TMS-EEG and sleep research, featuring an extra-low 3 mm profile for close coil positioning, reduced artifacts, and improved comfort during long recordings.
The Ag/AgCl electrode (18 mm diameter) includes an 8 mm preparation opening for stable impedance. Its passive design contains no electronics, enabling fast EEG signal recovery after TMS pulses. Compatible with g.GAMMAcap³ and standard conductive gels or pastes for efficient setup.
g.GAMMACAP FOR g.LADYBIRD TMS-EEG ELECTRODES
The g.GAMMAcap is optimized for use with g.LADYbird TMS electrodes, providing high comfort and fast electrode mounting. Its flexible fabric includes 74 labeled standard positions (based on the extended 10-20 system) and 86 intermediate positions for high-density recordings.
The cap supports a wide range of experimental paradigms including evoked potentials, brain mapping, and closed-loop stimulation experiments.
- Large: 58 – 62 cm head circumference
- Medium: 54 – 58 cm (fits approx. 95% of adults)
- Small: 50 – 54 cm
- Maxi: 44 – 48 cm
- Midi: 37 – 43 cm
- Mini: 32 – 36 cm
g.LADYBIRD EEG ELECTRODE PERFORMANCE IN TMS: ACTIVE VS. PASSIVE
This talk explores how different types of EEG electrodes interact with transcranial magnetic stimulation. The session compared the performance, signal quality, and practical considerations of using active versus passive electrodes in TMS-EEG studies.
HOW TO PERFORM TMS EXPERIMENTS WITH GTEC'S EEG ELECTRODES
g.LADYBIRD passive EEG electrodes feature a sintered Ag/AgCL electrode designed specifically for EEG recordings combined with TMS. These electrodes lack internal electronics, minimizing TMS artifact interference in EEG data. This feature is crucial for short-lasting EP recordings with TMS, ensuring rapid restoration of the EEG signal to normal levels within milliseconds. Ideal for TMS experiments, these electrodes offer a seamless integration for your research needs.
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