g.Nautilus PRO is a CE-certified and FDA cleared wearable headset to record brain activity in medical and clinical environments. It’s available with prefixed 8/16/32 dry or wet EEG electrode position for faster montage and to avoid errors. The dry electrode version is based on the worldwide proven g.SAHARA EEG technology and the gel-based electrode version comes with g.LADYbird EEG electrodes.
|g.SAHARA dry EEG electrodes|
|g.LADYbird gel-based EEG electrodes|
|8/16/32 channels wearable EEG with 3-axis accelerometer|
|24-bit accuracy at 500 Hz sampling rate|
|A new benchmark in usability|
|The only wearable headset with active EEG electrode technology|
|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|
|CE certified and FDA cleared medical device|
|Weight||< 110 g without electrode grid|
|Size||78 (L) x 60 (W) x 26 (H) mm|
|Color||8ch RED, 16ch PURPLE, 32ch BLUE, CSP16mB BLACK|
|Sensitivity||±2.25 V, ±1.125 V, ±750 mV, ±562,5 mV, ±375 mV, ±187.5 mV (software selectable)|
|Interface||Wireless 2.4 GHz ISM band|
|Digital inputs||8 digital trigger inputs at Base Station|
|Supply||Built-in lithium ion battery, runtime > 10 h with 32 channels, inductive charging according to the QI standard of the Wireless Power Consortium|
|Amplifier type||Real DC coupled|
|32 × ADC||24 Bit (1.024 MHz internal sampling per channel)|
|Noise level||< 0.6 µV RMS between 1 and 30 Hz (at highest input sensitivity)|
|Input channels||32 mono-polar / 16 bi-polar channels with GND and REF (software selectable)|
|Input impedance||DC > 100 MOhm|
|Certification and Standards||CE certified and FDA cleared medical device IEC60601-1 3rd, IEC60601-1-2, IEC62304, IEC60601-2-26, ISO 14971 10993-1, 62366, 2010-2012 IEEE Recommended Practice for Neurofeedback Systems|
g.Nautilus can be used for stroke rehabilitation, where patients perform different movements (e.g. hand movement, leg movement, …). Therefore, it is very important to record artifact-free EEG signals from the headset. Furthermore, patients participate in multiple EEG recording sessions; active EEG electrodes allow you to mount the g.GAMMAcap and begin recording brain activity quickly and easily. Studies have shown that BCI performance in experiments performed with active electrodes is superior to passive electrodes.
MEASURING EMOTIONAL RESPONSE
Dolby Laboratories is widely known for producing great sound in cinemas, and has been around since 1965. The lab uses g.Nautilus PRO to study emotional responses of people while they are watching videos. The scientists at Dolby Labs try to better understand what makes the audience engaged, what makes their skin blush, increase their heart-rate or give them goose bumps.
RECORDING EEG DURING TMS AND TDCS
g.Nautilus PRO allows to record EEG signals with active wireless EEG electrodes while tDCS is applied. TMS stimulations can be done too while g.Nautilus PRO measures the brain activity. A post-processing artifact removal algorithm integrated in g.BSanalyze software can robustly eliminate the discharge artifact of TMS within a few milliseconds.
Patients who suffer from disorders of consciousness (DOC) usually lay in bed. Therefore, a wireless and wearable EEG headset is easier to mount than a wired EEG recording device. These patients may also suffer from uncontrollable movements, which could pull on the EEG electrodes and degrade both EEG quality and the clinical assessment. g.tec’s studies have with DOC patients have shown that wearable EEG headsets reduce data lost due to artifacts. This is especially important for DOC patients, where clean brain signals are very difficult to acquire. A g.Nautilus PRO with 8/16/32 active EEG electrodes can be mounted within 1-2 minutes, which makes it particularly well suited for assessing brain activity in DOC or ADHD patients with limited brain recording time.
UNLIMITED POSSIBILITIES OF WEARABLE EEG
Wearable EEG headsets and biosignal acquisition devices are becoming increasingly important in medical and clinical environments, especially since more and more studies are conducted in the field instead of the lab. Therefore, g.tec developed g.Nautilus wearable EEG headsets. Its design is completely different from all other headsets and sets a new standard of usability. The tiny and lightweight biosignal amplifier is attached to g.GAMMAcap to avoid cable movements and to allow completely free movements. In combination with active g.SAHARA dry or g.GAMMAsys wet EEG electrode technology, users get top quality brain recordings from 8-64 channels within a few minutes.
“We have several ongoing studies. One of these studies is to extend human arm control to new approaches that control more than two arms with the help of brain-computer interfaces.”Hiroshi Ishiguro, PhD - Intelligent Robotics Laboratory, Japan
“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.”Aysegul Gunduz, PhD - University of Florida, USA
“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, Denmark