g.Nautilus: Specs & Features

Dry EEG Electrodes
Gel Based EEG Electrodes

The world's best EEG signals

g.Nautilus is g.tec’s new wireless biosignal acquisition system. Its design is completely different from all other devices and it sets a new standard of usability. The tiny and lightweight device is attached to the EEG cap to avoid cable movements and to allow completely free movements. In combination with g.tec’s active electrode technology, you will get top quality EEG recordings from 64/32/16/8 channels within few minutes.

Technical details

g.Nautilus has a built-in lithium ion battery, which allows for continuous recordings of up to 10 hours. The battery is recharged via a contactless charging pad within 2-3 hours. The device is completely waterproof, which allows easy cleaning of the electrodes together with the cap, with no need to disconnect or disassemble anything! g.Nautilus transmits data via the 2.4 GHz band with an indoor operating range of about 10 m. The input sensitivity of all channels is adjustable and the sampling rate can be set up to 500 Hz (250 Hz with the 64 channel version). An electrode impedance check can be performed automatically via software, and a 3-axis acceleration sensor provides online head movement information along with the biosignals. The base station for g.Nautilus is just a small receiver box connected to the PC via USB. 8 digital trigger lines can be connected to the base station to record event timing information.

Dry or gel-based versions

g.Nautilus is available with 8/16/32/64 channels. g.tec offers a flex-print solution with prefixed positions and devices with flexible cables to configure the electrode positions as you wish. A dry electrode version based on the worldwide proven g.SAHARA electrodes is also available with 8/16/32 channel. The pricing for g.Nautilus starts at 4.500 Euros.

g.Nautilus for clinical/medical use

In addition to the research version of g.Nautilus, we also have CE certified medical device g.Nautilus-PRO available.

Product Highlights

  • g.SAHARA dry EEG electrodes
  •  g.SCARABEO or g.LADYbird gel based EEG electrodes
  • prefixed postions of electrodes for fast and easy recordings
  • flexible positioning of electrodes (also for kids cap available)
  • 64/32/16/8 channel wireless EEG/ExG with 3-axis accelerometer
  • 24 bit accuracy at 500 Hz sampling rate
  • A new benchmark in usability
  • The only wireless system with active electrode technology
  • g.tec's unique internal impedance check with active electrodes
  • Waterproof device with contactless charging
  • 10 hours continuous recording and 2-3 hours charging
  • 2.4 GHz digital transmission, range: 10 meters indoor
  • Full integration into g.tec's software environment
  • Used for research applications only

Application Fields & Possibilities of g.Nautilus

Wireless EEG and biosignal acquisition systems are becoming more important in Brain-Computer Interface research, especially when studies tend to take part in the field instead of in the lab. The tiny and lightweight device is attached to the EEG cap to avoid cable movements and to allow completely free movement. In combination with active electrode technology, top quality EEG recordings from 64/32/16/8 channels are easy to get within few minutes.

The wireless g.Nautilus system opens up many new research areas that were not possible beforehand. For example, it can be used easily with children because it sits completely on the head and children do not try to remove it. Furthermore, free-moving applications can now be studied and participants are not locked to certain locations. Finally, on-demand EEG recordings can be triggered by external events while the user is wearing the system.

Rehabilitation

During stroke rehabilitation , patients perform different movements (e.g. hand movement, leg movement,…) and therefore it is very important to record artifact free EEG. Furthermore, patients participate in multiple recording sessions; active electrodes allow for an easy and fast montage setup of the EEG electrodes. BCI studies have shown that BCI performance in experiments performed with active electrodes is superior to passive electrodes.

Assessment

Disorders of Consciousness (DOC) patients are normally seated or lying in bed, and therefore a wireless solution is easier to mount than a wired EEG system. These patients may also suffer from uncontrollable movements, which could pull on the electrodes and degrade both the EEG quality and the clinical assessment. We have also noticed that fewer recordings are dismissed because of artifacts in the data when wireless systems are used. This is especially important for this patient group, where clean recordings are very difficult to acquire. A g.Nautilus with 16 active electrodes can be mounted within 1-2 minutes and this makes it particularly well suited for various brain assessments (ADHD, Parkinson, cognitive functions,…).

Communication

Communication systems for locked-in patients are used on a daily basis and therefore an easy and fast montage setup, coupled with high data quality, is essential. Dry electrode systems allows for a rapid montage setup with 8 EEG electrodes and gives nice data quality for recordings even at home. In this case it is important that active electrodes are used and that the device is very lightweight. The battery lasts for 8 hours of continuous recording and the completely sealed housing makes usage easier.

Sports Science & Medicine

In sports applications very light equipment is crucial, because otherwise nobody would want to wear an EEG device. g.Nautilus weights about as much as a climbing carabiner and has very compact packaging. The dry EEG version is well suited for high-altitude medicine because it does not require a hair wash. This is especially useful in remote locations where it would be difficult to get a hair wash. For faster sports, it is crucial to have very good contact between the head and the electrode and therefore the gel version is recommended for these applications. If the g.Nautilus is well prepped, people can even jump and run without seeing artifacts in the data.

Natalie Mrachacz-Kersting from Aalborg University in Denmark leads a research group that is engaged in basic neuromuscular mechanisms, their functional consequences mediating both acute adjustments (e.g., muscle fatigue, pain) and chronic adaptations (e.g., aging, training, stroke, rehabilitation). Read her user story: BCI Research at Aalborg University

Control

The high resolution EEG system with 64 channels enables exoskeleton control with motor imagery, P300 and SSVEP based BCI systems. The system has electrodes over the brain regions most important for finding control signals (motor cortex, central areas, visual cortex) for every type of BCI. The high number of electrodes can also be used for spatial filtering of the data to further improve the control quality.

Read the interview with Dr. Hiroshi Ishiguro who has been using g.Nautilus to control his robots: When Robots replace Humans

Response

g.Nautilus can also be used easily in aviation because of the fast montage setup and the artifact-free data, even in moving objects. Therefore, the system can easily be used in cars, plains, flight simulators and even g-simulators for pilots and astronauts. Very often VR is used to simulate such aviation scenarios, and persons are embedded in a virtual environment where embodiment is increased when they are not wired up to other equipment. A BCI system in VR allows the user to navigate or control the scenario without touching everything. g.Nautilus also works nicely together with eye-trackers and video cameras so that electrophysiological parameters can be analyzed for neuromarketing applications.

New Versions of g.Nautilus

The wireless g.Nautilus system opens up many new research areas that were not possible beforehand. For example, it can be used easily with children because it sits completely on the head and children do not try to remove it. Furthermore, free-moving applications can now be studied and participants are not locked to certain locations. Finally, on-demand EEG recordings can be triggered by external events while the user is wearing the system.


Expert Quotes

"With the g.Nautilus system our research group has managed to combine the BCI technology with other intelligent systems without expending time on replicating laboratory conditions everywhere to obtain good quality signals. Now we believe it’s possible to have computers, robots and smart devices interacting with a BCI in places where just a few years ago it was technically infeasible."

 - Omar Mendoza Montoya (Freie Universität Berlin)

"g.Nautilus wireless EEG amplifiers allow us to investigate freezing of gait in Parkinson’s disease, a dangerous symptom for the aging population as it can lead to falls. We can synchronize the EEG signals with VICON motion capture data seamlessly, without adding extra burden on our patients such as backpacks, or wired in hardware following them."

 - Dr. Aysegul Gunduz (University of Florida, US)

"We have used the g.USBamps for approximately four years now and the quality of the signals surpasses our greatest expectations. Last year we also invested in the g.Nautilus system and have been able to move from the more stringent laboratory conditions to the real world settings where BCIs find their applications. I would highly recommend both for anyone involved in BCI research."

 - Natalie Mrachacz-Kersting, PhD (Aalborg University, DK)


Versions of g.Nautilus

g.Nautilus 8/16/32/64, g.SAHARA

with g.SAHARA dry electrode technology which allows flexible positioning of the electrodes on the cap

g.Nautilus 8/16/32, g.SAHARA

prefixed channels with g.SAHARA active dry electrode technology which allows fast EEG recordings

g.Nautilus 8/16/32, g.LADYbird

prefixed channels with active g.LADYbird electrode system which allows fast EEG recordings

g.Nautilus 8/16/32/64, g.SCARABEO

with g.SCARABEO electrode system which allows flexible positioning of the electrodes


Available channel layouts

8 channel version

16 channel version

32 channel version

64 channel version


g.Nautilus sports application

Clean signals as a quality feature

The g.Nautilus sports measurements show how the wireless g.Nautilus biosignal amplifier can record EEG signals during sports activity and other exercises. From the raw EEG signals, Auditory Evoked Potentials (AEP) can be derived, which can show how physical motion like spinning or running impacts the subject’s ability to concentrate on mentally counting the acoustic stimuli. The g.Nautilus system can record, process, and analyze AEPs and other biosignals in real-time. 

In the first picture (left), the user is spinning wearing a wired EEG cap, later the same experiment was done with the wireless EEG cap g.Nautilus as you can see in the other pictures. The test results show that the wireless EEG cap is not only convenient, but can also produce clean data without any noise and artifacts from physical movement or other sources.

The raw data of the scope doesn't show many artifacts due to movement, since the g.Nautilus is a wireless EEG cap.


EEG RECORDING DURING TMS STIMULATION

TMS is a magnetic method to non-invasively stimulate the brain. This technology has been used to investigate the connectivity between the motor cortex and corresponding muscle groups for patients with brain damage. TMS has also been combined with Electroencephalogram (EEG) for motor rehabilitation and other clinical research applications. Therefore, we tested different complete EEG systems with a TMS device from a German company (MAG & More, Munich) for compatibility and functionality. Read more about EEG recordings during TMS stimulation: Compatibility and Functionality Test for Transcranial Magnetic Stimulation (TMS)

g.Nautilus was used during TMS stimulation with a TMS device from Mag&More. A g.Nautilus (cap size M) was prepared with active g.LADYbird electrodes and the sampling rate was set to 500 Hz and no filters were selected.  The TMS stimulation was done with a biphasic single pulse and about 300 repetitions applied with 1.1 Hz. 
Beside g.Nautilus, TMS can also be used with g.HIamp and g.USBamp. The stimulation artifact with active electrodes is around 6 ms.

Available configurations

Hardware and Accessories

product no.: 5100 read more g.NAUTILUS 32, g.LADYbird — 32 prefixed channels with active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for research only!
product no.: 5110 read more g.NAUTILUS 16, g.LADYbird — 16 prefixed channels with active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for research only!
product no.: 5120 read more g.NAUTILUS 8, g.LADYbird — 8 prefixed channels with active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for research only!
product no.: 5200 read more g.NAUTILUS 32, g.SAHARA — 32 prefixed channels with dry active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for research only! g.SAHARA 7mm electrodes "short-pin" included (16mm "long-pin" electrodes must be ordered seperately)
product no.: 5210 read more g.NAUTILUS 16, g.SAHARA — 16 prefixed channels with dry active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for different hair conditions short and long pin g.SAHARA Electrodes included; for research only! g.SAHARA 7mm electrodes "short-pin" included (16mm "long-pin" electrodes must be ordered seperately)
product no.: 5220 read more g.NAUTILUS 8, g.SAHARA — 8 prefixed channels with dry active electrode system on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charging, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check with active electrodes; for research only! g.SAHARA 7mm electrodes "short-pin" included (16mm "long-pin" electrodes must be ordered seperately)
product no.: 5130 read more g.Nautilus 64 flexible — 64 active channels with electrodes prefixed on a medium cap; 24 bit resolution; 250 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charing, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check; for research only; flexible electrode positioning
product no.: 5132 read more g.Nautilus 32 flexible — 32 active channels with electrodes prefixed on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charing, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check; for research only; flexible electrode positioning
product no.: 5134 read more g.Nautilus 16 flexible — 16 active channels with electrodes prefixed on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charing, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check; for research only; flexible electrode positioning
product no.: 5136 read more g.Nautilus 8 flexible — 8 active channels with electrodes prefixed on a medium cap; 24 bit resolution; 250 or 500 Hz sample rate; built in 3-axis acceleration sensor; Lithium ION batteries in Compliance with Section II of PI967, easy wireless charing, Qi compatible; wireless data transmission; watertight housing for easy cleaning; internal impedance check; for research only; flexible electrode positioning

See some related products

Hardware and Accessories

product no.: 5321 read more Trigger cable for g.Nautilus (Parallel Port) — Trigger cable to connect the 8 trigger inputs of the g.Nautilus base station to the parallel port (25-pin, sub-D). Can be used with E-prime or Presentation stimulation system. Length: 3 m
product no.: 5322 read more Trigger cable for g.Nautilus (g.STIMbox) — Trigger cable to connect the 8 trigger inputs of the g.Nautilus base station to the digital output connector of g.STIMbox (26-pin, sub-D). Length: 3 m
product no.: 5323 read more Trigger cable for g.Nautilus (g.TRIGbox) — Trigger cable to connect 4 trigger inputs of the g.Nautilus base station to the output connector of g.TRIGbox (15-pin, sub-D). Length: 3 m
product no.: 5240 read more audio trigger cable for g.Nautilus — DIG IN of g.Nautilus to mindBEAGLE audio trigger adapter box

Lectures

product no.: 4055 read more Lecture 6: g.Nautilus Sports — Teaching lecture; using Wireless EEG during exercises (e.g. running on a treadmill or using the exercise bike) for measuring auditory evoked potentials (AEPs)

Software

read more g.NEEDaccess — network enabled easy data access
product no.: 0167 read more g.Recorder: Specs & Features — fully GUI-based (graphical user interface); comfortable biosignal visualization and storage; full control of the amplifier and header
product no.: 0167EXT read more g.Recorder Extension Pack — additional features for g.Recorder: real-time EP (evoked potential) visualization, video recording, data viewer mode, feature analysis: HR, HRV, CSA, CFM
product no.: 0260E read more Highspeed Online Processing Under Simulink for g.Nautilus — SIMULINK driver and blockset modules; data processing with maximum system speed
product no.: 0111 read more g.RTanalyze: Specs & Features — real-time biosignal processing blockset under SIMULINK; real-time algorithms
product no.: 6305 read more g.NEEDaccess API — g.tec general device data access interface; application programming interface
product no.: 6306 read more g.NEEDaccess MATLAB API — g.tec general device data access interface; application programming interface; works with g.Nautilus, g.USBamp and g.HIamp type amplifiers
product no.: 0264 read more g.UDPinterface: Specs & Features — data exchange with network connection between Simulink/MATLAB on different PCs (eg. BCI, VR, XVR, ...); single place licence; prerequisite MATLAB for OS English Win 32/64, SIMULINK
product no.: 0291 read more g.EYEtracking Interface for SIMULINK — read eyetracking information into Simulink
product no.: 0148 read more ACTOR BCI - Application ConTrol and Online Reconfiguration (ACTOR) protocol — Simulink model with matrix interface that can be remotely updated or configured with configuration files; sends commands to external devices
product no.: 0147 read more hybrid BCI model — SSVEP and P300 hybrid based control; prerequisite SIMULINK HIGH-SPEED ONLINE Processing, g.RTanaylze
product no.: 0149 read more EMG/EOG/mouse control — Simulink model to control the matrix interface with EMG, EOG or a mouse
product no.: 0144 read more g.VIBROTACTILEp300 Model — 2-, 3- and 8-channel vibrotactile P300 based BCI control; prerequisite: SIMULINK HIGH SPEED ONLINE Processing, g.BSanalyze Base, EEG and Classify Toolbox
product no.: 0311 read more g.DISTRIBUTEDeeg — allows you to record biosignal data from different distributed PCs (DataPCs) in the network and transmit the recorded data to a central evaluation / data storage PC (EvalPC).
product no.: 0136 read more g.BCI CVEP model — Code-based BCI model; BCI systems can also use pseudo-random stimulation sequences on a screen (code-based BCI); prerequisite SIMULINK HIGH-SPEED ONLINE Processing, g.BSanalyze Base, EEG and Classify Toolbox
product no.: 0137 read more g.BCI SOCI model — Screen Overlay Control Interface module; can be used especially for virtual reality (VR) applications and remote control of devices to provide the standard user interface by directly embedding the BCI stimuli; generates CVEP or SSVEP stimuli and supports single symbol and row column for P300 stimulation. single place licence; prerequisite MATLAB R2014a for OS English Win 64 (Windows 7), SIMULINK HIGH-SPEED ONLINE Processing, g.BSanalyze Base, EEG and Classify Toolbox
product no.: 0139E read more g.Nautilus P300 BCI model — 8-channel P300 based speller; prerequisite: SIMULINK HIGH SPEED ONLINE PROCESSING (0260e)
product no.: 0141E read more g.Nautilus SSVEP BCI model — 8 channel SSVEP based control
product no.: 0142E read more g.Nautilus common spatial patterns BCI model — Simulink model to calculate CSPs for 2 / 3 classes, tutorial; prerequisite: SIMULINK HIGH-SPEED ONLINE Processing (0260E), g.Bsanalyze Base, EEG and Classify Toolbox (0153); special g.Nautilus electrode montage necessary!
product no.: 1303E read more SSVEP model and Hardware for g.Nautilus — bundle for SSVEP based robot control; consists of g.Nautilus SSVEP model, g.SSVEPbox, g.STIMbox and small robot with bluetooth interface

Electrodes and Sensors

product no.: 5300S_3 read more g.GAMMAcap3 for g.Nautilus, Size S, 5mm — electrode cap with 74 standard, for g.Nautilus with g.LADYbird, extended 10/20 system and 86 intermediate positions; size: S (50-54cm); chin strap and occipital velcro pad
product no.: 5300M_3 read more g.GAMMAcap3 for g.Nautilus, Size M, 5mm — electrode cap with 74 standard, for g.Nautilus with g.LADYbird, extended 10/20 system and 86 intermediate positions; size: M (54-58cm); chin strap and occipital velcro pad
product no.: 5300L_3 read more g.GAMMAcap3 for g.Nautilus, Size L, 5mm — electrode cap with 74 standard, for g.Nautilus with g.LADYbird, extended 10/20 system and 86 intermediate positions; size: L (58-62cm); chin strap and occipital velcro pad
product no.: 5300S_2 read more g.GAMMAcap2 for g.Nautilus, Size S, 2mm — electrode cap with 74 standard, for g.Nautilus with g.SAHARA, extended 10/20 system and 86 intermediate positions; size: S (50-54cm); chin strap and occipital velcro pad
product no.: 5300M_2 read more g.GAMMAcap2 for g.Nautilus, Size M, 2mm — electrode cap with 74 standard, for g.Nautilus with g.SAHARA, extended 10/20 system and 86 intermediate positions; size: M (54-58cm); chin strap and occipital velcro pad
product no.: 5300L_2 read more g.GAMMAcap2 for g.Nautilus, Size L, 2mm — electrode cap with 74 standard, for g.Nautilus with g.SAHARA, extended 10/20 system and 86 intermediate positions; size: L (58-62cm); chin strap and occipital velcro pad

Complete Solutions

product no.: 5241 read more g.Nautilus AEP Setup — complete setup for auditory stimulation experiments with g.Nautilus; consisting of: ASSR, BAEP, AEP stimulation unit; audio trigger cable for g.Nautilus; Lecture 4: Evoked potentials; bundle offer (0150, 5240, 4053)
product no.: 1023 (mini, midi, maxi) read more g.GAMMAcap2KIDS — electrode cap for kids with 74 standard positions; international 10-10/extended 10-20 system
product no.: 1027b read more g.GAMMAcap2SETKIDS — set of 3 caps (size mini, midi, maxi), 74 standard positions according to the international 10-10/extended 10-20 system, additional positions can be added freely by the user, includes 1 chest belt set

Related Media and Documents

Lectures

download
application/zip
Lecture 6: g.Nautilus Sports — 26/11/2015 — 106.97 MB

Product Brochures

download
application/pdf
g.Nautilus 64 — 08/04/2016 — 274.54 kB
download
application/pdf
g.SAHARA — 25/03/2011 — 524.63 kB
download
application/pdf
g.SCARABEO — 22/11/2012 — 486.88 kB