Portfolio Description
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  • March 13, 2017

g.tec is a developer of biosignal modules that assist in brain-computer interface (BCI). Established in 1999, their products include biosignal data acquisition equipment, eye tracking systems, electrode systems and complete brain-computer interface systems. Developed compatible with MATLAB/Simulink, g.tec systems are used in medical, rehabilitation, neuro research and biomedical engineering. Other than hardware, g.tec has developed many innovative software for biosignal recording, processing and calculating biofeedback and the users physiological state.

g. Nautilus

g.Nautilus is a g.tec flagship product, a 32/16/8 channel wireless EEG/ExG biosignal acquisition system with 3-axis accelerometer. Being wireless, the tiny and lightweight device is easily attached to the EEG cap allow completely free movements without limitation by cables. The system transmits data on the 2.4 GHz band with an operating range of 10m and records continuous for up to 10 hours. The system and cap is waterproof and comes in both the standard “wet” electrode caps and “dry” electrode version (g.SAHARA).

The base station for g.Nautilus is easily connected to a PC via USN and can support up to 8 digital trigger lines to record event timing information.


g.MOBIlab+ is a multimodal portable biosignal acquisition and analysis system that is fits in your pocket. Designed to send biosignal data wirelessly via bluetooth 2.0 to a computer, tablet or smart phone, the system allows for investigation of brain, heart, muscle activity, eye movement, respiration, skin response, pulse and other body signals without being confined to being near a computer. As a fail safe, the device simultaneously records on an on-board SD card and can operate up to 100 hours per charge.

g.MOBIlab+ is equipped with a low-noise biosignal amplifier and a 16-bit A/D converter (256 Hz) that produce high signal-to-noise ratio giving it excellent data quality. The device s recommended by BCI2000 and can be integrated with SIMULINK to make a real-time system under for BCI and biofeedback.


g.USBamp is an USB 2.0 enabled, 24 bit a high-performance biosignal amplifier and acquisition system. The amplifier connects easily to the USB socket on your PC/notebook for immediately data recording and has 16 DC-coupled input channels and can be stacked to create a 32/48/64/… channels system. With 4 independent grounds, g.USBamp guarantees no interference between the recorded signals (EEG/ECoG/ECG/EMG/EOG/spikes/…) and easily configured for high-speed online data processing for SIMULINK and LabVIEW (recommended by BCI2000 & approved under OpenViBE).


g.tec provides complete MATLAB-based research and development systems, including all hard- and software components needed for data acquisition, real-time and off-line data analysis, data classification and providing neurofeedback. A BCI system can be built with g.MOBIlab+, g.USBamp, g.HIamp or g.Nautilus. g.MOBIlab+ is available with up to 8 EEG channels with wireless signal transmission and is portable. g.USBamp is available for 16-64 EEG channels and transmits the data over USB to the PC or notebook. g.HIamp acquires 64 – 256 channels over USB. g.Nautilus wireless EEG is available with 8 – 64 channels.

With the software package High-Speed Online Processing under SIMULINK, you can read the biosignal data directly into SIMULINK. SIMULINK blocks are used to visualize and store the data. The parameter extraction and classification can be performed with standard SIMULINK blocks, the g.RTanalyze library or self-written S-functions. After the EEG data acquisition, the data can be analyzed with g.BSanalyze, the EEG and classification toolbox.

With ready-to-use BCI sample applications, you can develop state-of-the-art BCI experiments within a few hours. g.tec started to develop BCI systems more than 15 years ago. Therefore, all important BCI functions are included in the package and can easily be used and modified. See some BCI-related videos here!


Human-Centered research with BCI and Eyetracking

Wireless EEG and biosignal acquisition systems are becoming more important in neurophysiological research, especially when studies tend to take part in the field instead of in the lab. Therefore, it is necessary to synchronize the eyetracking data with EEG and other biosignals such as pulse, skin connectivity, respiration rate or heart rate.

Real-Time Eye Movement Data Using SIMULINK

The g.EYEtracking Interface for SIMULINK allows you to acquire eye gaze and x-, y-coordinates of the eye together with biosignal data. The signals can be visualized, stored and analyzed in real-time in SIMULINK and offline in MATLAB. The g.EYEtracking Interface for g.HIsys allows users to acquire biosignal data such as EEG, ECG, EMG, eyetracking information, and other signals in real-time. It provides a block to read gaze data from the eye-tracker simultaneously with other biosignal data coming from g.USBamp, g.HIamp or g.Nautilus wireless EEG system with dry or wet electrodes.

g.EYEtracker Interface can be used with the following fixed/cable eye trackers on the monitor or wearable/wireless eye trackers. The main advantage of wireless eyetrackers is that subjects can freely move in the experimental environment and are not tied to computer monitors.

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For more Information on g.tec, contact TME Systems today.