Combined EEG and Eyetracking: g.Nautilus & Tobii Pro Glasses Unlocks Powerful Insights | g.tec medical engineering GmbH

ELEVATE NEUROMARKETING RESEARCH

Integrated EEG and Eyetracking Technology for Comprehensive Consumer Behavior and Cognitive Analysis

WEARABLE EEG AND EYE TRACKER

Using the g.Nautilus wearable EEG system in combination with Tobii Pro Glasses 3 offers a powerful and comprehensive solution for studying brain activity and behavior simultaneously in real-world environments. This integration enables researchers to capture high-quality EEG data while accurately monitoring eye movements and gaze patterns, providing deeper insights into cognitive and neural processes associated with visual attention, perception, and decision-making.

The lightweight and wireless design of all g.Nautilus wearable EEG headsets ensures that subjects can move naturally, enhancing the ecological validity of experiments. By synchronizing EEG and eye-tracking data, researchers can efficiently analyze how brain responses correspond to visual stimuli and behavioral actions in real-time. This combination is particularly valuable for neuromarketing, cognitive psychology, and other fields where understanding the connection between brain activity and visual engagement is essential.

The Tobii Pro Glasses 3 interface block in Simulink manages the device’s acquisition state, enabling control over start/stop functions and synchronization of video and gaze data with EEG. Calibration can be done via Simulink or the Tobii Pro Glasses 3 application before running the model. To operate, create a Simulink model from the Tobii Pro Glasses 3 Demo template, connect the recording unit via Wi-Fi, and perform a quick calibration with a card placed 0.5-1.0 meters away.

For video synchronization, Tobii Pro Lab software can synchronize live scene view events (such as gaze on objects) with EEG data using a synchronization signal from the Tobii Pro Glasses 3 connected to an input on the biosignal amplifier. Events recorded in Tobii Pro Lab can be exported and imported into g.BSanalyze for further offline processing and analysis, enhancing the integration of gaze and EEG data for research applications.

To read more about neuroscience experiments with g.tec technology, please visit our Frontiers profile.

g.NAUTILUS WEARABLE EEG SPECIFICATIONS

Use Tobii PRO Glasses 3 with g.Nautilus PRO Flexible, g.Nautilus MULTI-PURPOSE and g.Nautilus RESEARCH
8/16/19/32 EEG channels wearable EEG with 3-axis accelerometer
24-bit accuracy at 500 Hz sampling rate
2.4 GHz digital transmission, range: 10 meters indoor
10 hours continuous recording and 2-3 hours charging
Internal impedance check
Full software environment for combined EEG and Eyetracking recordings
Easy configuration and setup with g.HIsys Professional for Simulink
g.BSanalyze software for multimodal biosignal data processing and analysis

TOBII PRO GLASSES SPECIFICATIONS

Eye tracking techniqueCorneal reflection, dark pupil, stereo geometry
Binocular eye trackingYes
Sampling rate50 Hz or 100 Hz
Calibration procedureOne point
Accuracy0.6°
Parallax compensation toolAutomatic
Slippage compensationYes, 3D eye tracking model
Pupil measurementYes, absolute measure
Gaze recovery time1 frame (immediate)
Blink recovery time1 frame (immediate)

SEAMLESS EEG AND EYETRACKING INTEGRATION

Combining the g.Nautilus wearable EEG systems such as g.Nautilus RESEARCH, g.Nautilus MULTI-PURPOSE or g.Nautilus PRO FLEXIBLE with Tobii PRO Glasses 3 provides a powerful tool for studying brain activity and behavior simultaneously in real-world settings. This setup captures high-quality EEG data while monitoring eye movements, offering insights into cognitive processes like visual attention and decision-making. The wireless, lightweight design allows natural movement, increasing the ecological validity of experiments. By synchronizing EEG and eye-tracking data, researchers can analyze how brain responses correlate with visual stimuli and behavior in real-time, making it valuable for fields such as neuromarketing and cognitive psychology.

TOBII PRO GLASSES 3 INTERFACE

The Tobii Pro Glasses 3 Interface block in Simulink manages the device’s acquisition state, enabling control over start/stop functions and synchronization of video and gaze data with EEG. Calibration can be done via Simulink or the Tobii Pro Glasses 3 application before running the model. To operate, create a Simulink model from the Tobii Pro Glasses 3 Demo template, connect the recording unit via Wi-Fi, and perform a quick calibration with a card placed 0.5-1.0 meters away.

For video synchronization, Tobii Pro Lab software can synchronize live scene view events (such as gaze on objects) with EEG data using a synchronization signal from the Tobii Pro Glasses 3 connected to an input on the biosignal amplifier. Events recorded in Tobii Pro Lab can be exported and imported into g.BSanalyze for further offline processing and analysis, enhancing the integration of gaze and EEG data for research applications.

Tobii Pro Simulink Interface of g.HIsys toolbox

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