g.Nautilus Multi-Purpose: Complete EEG & Biosignal Amplifier for Total Insight
The g.Nautilus Multi-Purpose is a multiple EEG and biosignal amplifier, which can connect to other body sensors such as ECG/EOG/EMG electrodes to measure GSR, respiration, and many other biosignals. g.Nautilus Multi-Purpose is available with g.SAHARA hybrid active or g.SCARABEO active wet EEG electrodes, both of which allow flexible positioning.
g.Nautilus Multi-Purpose 8/16/32/64, with g.SAHARA hybrid active EEG electrode technology with 4 detachable channels |
g.Nautilus Multi-Purpose 8/16/32/64, with g.SCARABEO active EEG electrode technology with 4 detachable channels |
Combine g.Nautilus Multi-Purpose with g.SENSOR fNIRS to record EEG and fNIRS with a single head-set |
Flexible EEG electrode positioning |
24 bit accuracy at 250 Hz sampling rate (64 channels) |
2.4 GHz digital transmission, range: 10 meters indoor |
A new benchmark in usability |
Full software environment available |
Weight | < 140 g without electrode grid (64 channels) < 110 g without electrode grid (8/16/32 channels) |
Size | 78 (L) x 60 (W) x 36 (H) mm (64 channels) 78 (L) x 60 (W) x 26 (H) mm (8/16/32 channels) |
Color | 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 > 6 h with 64 channels (> 10 h with 8/16/32 channels), inductive charging according to the QI standard of the Wireless Power Consortium |
Amplifier type | Real DC coupled |
64 × 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 | Up to 64 mono-polar / 32 bi-polar channels with GND and REF (software selectable) |
Input impedance | DC > 100 MOhm |
Safety class | II |
Sampling frequency | 250/500 Hz, use only one device with 500 Hz in one room |
UNLIMITED POSSIBILITIES OF WEARABLE EEG
Wearable EEG headsets are becoming increasingly important in medical and clinical environments, since more and more studies are conducted in the field. Therefore, many different versions of g.Nautilus have been developed with a completely different design and a new standard of usability. The tiny and lightweight amplifier is attached to the g.GAMMAcap to avoid cable movements and to allow completely free motion. g.SAHARA hybrid active and g.SCARABEO active wet EEG electrodes provide users with top quality data 8/16/32/64 channels.

SPORTS SCIENCE & MEDICINE
The g.Nautilus Multi-Purpose wearable EEG headset is lightweight and highly durable, ideal for movement and challenging real-world experiments. Weighing as much as a climbing carabiner, it offers compact packaging.
The g.Nautilus Multi-Purpose, equipped with g.SAHARA hybrid active EEG electrodes, is perfect for remote locations like high-altitude medicine, eliminating the need for hair washing. Meanwhile, the g.Nautilus Multi-Purpose with g.SCARABEO active EEG electrodes ensures excellent head-to-electrode contact, reducing data artifacts, crucial for disciplines like sports science involving running and jumping.
To read more about neuroscience experiments with g.tec technology, please visit our Frontiers profile.

MEASURE BIOSIGNALS IN HIGH-ALTITUDE
During alpine high-altitude expeditions, g.Nautilus Multi-Purpose wearable EEG headset can be used to record the physiological impact of high altitude on both EEG and ECG parameters. This is especially interesting for altitude medicine research.

RECORD EEG & FNIRS
g.Nautilus Multi-Purpose in combination with g.SENSOR fNIRS enables simultaneous recordings of EEG and fNIRS (functional near-infrared spectroscopy) signals. In combination with g.tec’s active EEG electrode technology, researchers get top-quality EEG recordings from 64/32/16/8 g.SCARABEO EEG channels and 8 fNIRS channels by using g.SENSOR fNIRS within a few minutes.

HOW TO RECORD FROM DIFFERENT AND MULTIPLE BIOSIGNAL AMPLIFIERS
Recording from multiple amplifiers is essential for the development of advanced BCI systems capable of decoding complex neural signals for applications such as neuroprosthetics, communication aids for individuals with paralysis, and brain-controlled devices. The data obtained from multiple amplifiers enables more precise and robust decoding of user intent, enhancing the performance and usability of BCI technologies.