LADYBIRD
ACTIVE & PASSIVE EEG ELECTRODES FOR HIGH-QUALITY BRAIN SIGNAL ACQUISITION
RESEARCH-GRADE ACTIVE & PASSIVE EEG ELECTRODES FOR BCI, TMS & COGNITIVE NEUROSCIENCE
The g.LADYbird electrode family provides high-quality active and passive EEG electrodes for Brain–Computer Interface research, cognitive neuroscience, neurophysiology, TMS-EEG, and multimodal biosignal acquisition. Designed for reliable signal quality and efficient electrode preparation, g.LADYbird integrates seamlessly with the g.tec EEG ecosystem and supports demanding research applications.
The g.LADYbird active EEG electrode incorporates a miniature amplifier directly inside the electrode to reduce movement artefacts and electromagnetic interference before the signal reaches the amplifier. This improves signal quality and has demonstrated approximately 10% higher Brain–Computer Interface classification accuracy compared to conventional passive electrode recordings in many BCI studies.
The g.LADYbird passive EEG electrode features a sintered Ag/AgCl electrode without integrated electronics, making it particularly suitable for TMS-EEG experiments where rapid recovery from stimulation artefacts is essential.
Both active and passive electrodes are compatible with g.HIamp and g.USBamp biosignal amplifiers and are designed for seamless integration with g.GAMMAcap electrode caps.
| Available as active and passive EEG electrodes |
| High-quality EEG, EMG, ECG, and EOG recordings |
| Integrated preamplifier inside each active electrode for reduced movement artefacts and electromagnetic interference |
| Passive Ag/AgCl electrodes optimized for TMS-EEG experiments |
| Sintered Ag/AgCl electrode material for stable, low-noise recordings |
| Frequency response from DC to 10 kHz |
| Compatible with 16–256 channel EEG acquisition systems |
| Compatible with g.HIamp and g.USBamp |
| Compatible with g.GAMMAcap3 electrode caps |
| Large integrated gel reservoir for long-duration EEG recordings |
| Gel applied directly through the electrode opening for fast preparation |
| No abrasive skin preparation required |
| Electrodes remain mounted in the cap for faster setup and cleaning |
| Individually replaceable electrodes for simplified maintenance |
| Simultaneous impedance measurement with g.HIamp using the dedicated g.LADYbird Z electrode |
| 2-pin touch-proof safety connectors |
| Lightweight design to minimize cable movement artefacts |
| Suitable for Brain–Computer Interfaces, ERP, TMS-EEG, cognitive neuroscience and multimodal biosignal acquisition |
| Electrode Types | Active and Passive g.LADYbird EEG electrodes |
| Electrode Material | Sintered Ag/AgCl |
| Active Electrode Amplification | Integrated miniature preamplifier inside each electrode |
| Frequency Response | DC to 10 kHz |
| Supported Biosignals | EEG, EMG, ECG, EOG |
| Recording Configurations | 16–256 channels (depending on amplifier configuration) |
| Connector Type | 2-pin touch-proof safety connector (active electrodes) |
| Electrode Interface | Gel-filled wet electrode |
| Gel Reservoir | Integrated large gel reservoir for long recordings |
| Gel Application | Through dedicated filling opening in the electrode |
| Skin Preparation | No abrasive skin preparation required |
| Impedance Measurement | Supported with g.HIamp using dedicated g.LADYbird Z electrode on Channel 1 |
| Active Electrode Compatibility | g.HIamp Active Electrode Connector Box, g.GAMMAsys |
| Passive Electrode Compatibility | g.HIamp Passive Electrode Connector Box |
| Electrode Mounting | Electrodes remain mounted in the cap for rapid setup and cleaning |
| Electrode Replacement | Individual electrodes can be replaced without replacing the complete cap |
| TMS Compatibility | Passive electrodes without integrated electronics minimize TMS artefacts and allow rapid signal recovery |
| Intended Applications | 1.5 kV isolation (system-dependent connector configuration) |
| Safety Connectors | Medical touch-proof safety connectors |
| Cleaning | Reusable electrodes designed for repeated cleaning and long-term laboratory use |
g.LADYBIRD ACTIVE EEG ELECTRODES
The g.LADYbird active EEG electrode integrates a miniature preamplifier directly inside the electrode to reduce movement artefacts, cable interference, and electromagnetic noise before the signal reaches the amplifier. Its large gel reservoir supports long recording sessions, while the electrode remains mounted in the g.GAMMAcap to speed up preparation and ensure reproducible electrode placement across experiments. Active g.LADYbird electrodes are ideal for Brain–Computer Interfaces, ERP studies, cognitive neuroscience, and multimodal EEG research.
✔️ Integrated preamplifier
✔️ Reduced cable and movement artefacts
✔️ Higher impedance tolerance
✔️ Shorter setup time with conductive gel
✔️ Ideal for long recordings
✔️ BCI, ERP, cognitive neuroscience
g.LADYBIRD PASSIVE EEG ELECTRODES
The g.LADYbird passive EEG electrode uses a sintered Ag/AgCl electrode without integrated electronics, making it particularly suitable for TMS-EEG experiments. The passive design minimizes stimulation artefacts and enables rapid recovery of the EEG signal, supporting reliable recordings of TMS-evoked potentials as well as conventional EEG studies.
✔️ No integrated electronics
✔️ Optimized for TMS-EEG
✔️ Rapid recovery after TMS pulses
✔️ Additional skin preparation using abrasive gel
✔️ Ideal for TMS-evoked potentials
g.GAMMACAP FOR g.LADYBIRD ELECTRODES
The g.GAMMAcap provides reproducible electrode placement based on the extended international 10-10 system and supports rapid preparation for EEG research. With 74 labelled positions and 86 additional intermediate positions, it can be configured for applications such as Brain–Computer Interfaces, ERP experiments, high-density EEG, and brain mapping. Electrodes remain mounted in the cap during cleaning, reducing preparation time and minimizing handling errors.
g.GAMMABOX FOR BIOSIGNAL AMPLIFIERS
g.GAMMAbox is an EEG Electrode Connector Box that connects the fully equipped EEG cap with g.tec’s biosignal amplifiers such as g.USBamp or g.HIamp biosignal amplifier. If it is used with g.GAMMAclip ECG, EMG and EOG recordings are possible with active electrode technology. It is designed to make experimental setups for EEG/ECG/EMG/EOG recording fast and easy, and of highest quality.
- Avoid or reduce artifacts from movements and electromagnetic interference
- Fastest electrode montage for multi-channel recordings
- No abrasive skin treatment required; just inject a drop of gel
- Single electrodes can be replaced easily
- All cables have the necessary 1.5 kV isolation
- 16 Channels
- 10 kHz Filter DC
- 9V Battery supply
- 2-pin safety Sockets
GOLD-STANDARD EEG FOR PEER-REVIEWED RESEARCH
The g.LADYbird active EEG electrodes are widely used in peer-reviewed neuroscience research and have served as the gold-standard gel-based EEG system in comparative studies evaluating emerging EEG technologies. Researchers rely on g.LADYbird when high signal quality, stable recordings, and reproducible experimental conditions are required for advanced Brain-Computer Interface and neuroscience research.
For example, a study published in Frontiers in Neuroscience used the g.USBamp and g.LADYbird system as the laboratory reference to compare gel-based, water-based, and dry EEG technologies for decoding natural reach-and-grasp movements. The study demonstrated that g.LADYbird provides research-grade recordings suitable for movement decoding and Brain-Computer Interface development, with the resulting dataset released publicly as a benchmark for the international BCI community.
Today, g.LADYbird electrodes are used in a broad range of applications, including Brain-Computer Interfaces, event-related potentials (ERP), motor control, movement decoding, cognitive neuroscience, TMS-EEG, neurorehabilitation, virtual reality, hyperscanning, and multimodal biosignal acquisition, making them a trusted choice for researchers worldwide.
PEER-REVIEWED RESEARCH
The g.LADYbird active and passive EEG electrodes have been used in peer-reviewed neuroscience research by leading universities and research institutes worldwide. Designed for stable, low-noise EEG acquisition, they support demanding experimental paradigms ranging from conventional EEG recordings to real-time Brain–Computer Interfaces, multimodal biosignal acquisition, and closed-loop neurotechnology.
Published studies have used g.LADYbird electrodes for Brain-Computer Interfaces (P300, SSVEP, and Motor Imagery), cognitive neuroscience, event-related potentials (ERP), TMS-EEG, neurorehabilitation, hyperscanning, virtual and augmented reality, human-computer interaction, and multimodal experiments combining EEG with EMG, EOG, and other physiological signals. Researchers have relied on g.LADYbird in complex experimental environments requiring synchronized EEG acquisition, real-time signal processing, and integration with virtual reality and Brain–Computer Interface software, demonstrating its suitability for high-performance neurotechnology research.
FREQUENTLY ASKED QUESTIONS
Active EEG electrodes contain a miniature preamplifier directly inside the electrode, amplifying the EEG signal before it travels through the cable. This reduces movement artefacts, cable interference, and electromagnetic noise, making active electrodes ideal for Brain-Computer Interfaces, ERP studies, and long recording sessions. Passive EEG electrodes do not contain integrated electronics and are particularly well suited for TMS-EEG experiments, where rapid recovery from stimulation artefacts is essential.
Active EEG electrodes are recommended when high signal quality, reduced artefacts, and stable recordings are required, especially for Brain-Computer Interfaces, cognitive neuroscience, neurofeedback, and mobile EEG experiments. Passive EEG electrodes are the preferred choice for TMS-EEG and applications where the electrode design must minimize magnetic stimulation artefacts.
Yes. g.LADYbird electrodes are widely used for Brain-Computer Interface research, including P300, SSVEP, and Motor Imagery paradigms. Their high signal quality and compatibility with the g.tec hardware and software ecosystem make them suitable for both offline analysis and real-time BCI applications.
Yes. The passive g.LADYbird electrodes are specifically designed for TMS-EEG applications. Their sintered Ag/AgCl construction enables rapid recovery after TMS pulses, making them suitable for recording TMS-evoked potentials and other combined EEG-TMS experiments.
g.LADYbird electrodes are compatible with g.tec biosignal amplifiers, including g.HIamp and g.USBamp. Active electrodes are connected through the g.GAMMAbox, while passive electrodes connect directly to compatible amplifiers using the appropriate connectors.
g.LADYbird electrodes are designed for use with the g.GAMMAcap, which follows the extended international 10-10 electrode placement system. The cap supports reproducible electrode positioning and allows the electrodes to remain mounted between recording sessions, reducing preparation time.
Yes. In addition to EEG, g.LADYbird electrodes can be used for EMG, EOG, and ECG recordings, making them suitable for multimodal neuroscience experiments that combine multiple physiological signals.
Yes. Both active and passive g.LADYbird electrodes are reusable and designed for long-term laboratory use. The durable construction and removable cap system simplify cleaning and maintenance while ensuring consistent recording performance over many experiments.
g.LADYbird electrodes are used worldwide for Brain-Computer Interfaces, event-related potentials (ERP), cognitive neuroscience, TMS-EEG, neurorehabilitation, motor control research, hyperscanning, sleep research, virtual and augmented reality, human-computer interaction, neuroergonomics, and multimodal biosignal acquisition combining EEG with EMG, ECG, EOG, eye tracking, and other physiological measurements.
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