Brain X.on set

Brain Products X.on Set – Wireless EEG Set

The Brain Products X.on set is a portable, wireless EEG system designed for conducting neurophysiological research outside of a traditional laboratory setting, as well as for educational and research applications.
The system enables EEG signal recording from 7 channels located at positions F3, F4, C3, Cz, C4, P3, and P4.
The X.on was developed by Brain Products GmbH, a manufacturer of professional EEG systems and solutions for neurophysiological research.
The set uses passive Ag/AgCl electrodes equipped with sponges soaked in electrolyte solution, which reduces subject preparation time compared to traditional systems requiring gel.
The "one size fits all" design is designed for individuals with a head circumference of approximately 54–60 cm.
Wireless data transmission is achieved via Bluetooth Low Energy.
EEG data can be recorded locally and transmitted in real time using the LSL (Lab Streaming Layer) standard. The user has access to raw EEG data, allowing for further analysis using external research tools.
The system can be used with Android devices and Windows computers.
The optional PEER software also enables ERP research using Apple iOS devices.
X.on is a solution intended for professional research and educational applications.
X.on is not a medical device and should not be used for diagnosis, therapy, medical monitoring, or other medical purposes.

Technical Specifications

Number of EEG channels: 7.
EEG electrode positions: F3, F4, C3, Cz, C4, P3, P4.
Reference and ground electrodes: REF/GND located in the ear clip.
Total number of supported electrodes: up to 11 – 7 EEG, 2 REF/GND, and 2 bipolar electrodes.
EEG electrode technology: passive Ag/AgCl electrodes with electrolyte-filled sponges.
REF/GND electrodes: passive Ag/AgCl electrodes.
Data transmission: wireless, Bluetooth Low Energy 5.
Communication band: 2.4 GHz ISM.
Amplifier sampling rate: 125 Hz, 250 Hz, or 500 Hz.
Analog-to-digital converter resolution: 16-bit or 24-bit. Input voltage range for 16-bit: ±9.76 mV.
Input voltage range for 24-bit: ±312 mV.
DC input impedance: >0.4 GΩ.
AC input impedance: >0.4 GΩ in parallel with 220 pF.
CMRR – common mode rejection ratio: >75 dB.
High-pass filter: 0.1 Hz, 0.5 Hz, or 1 Hz – software selectable.
Low-pass filter/anti-aliasing:
-33 Hz at 125 Hz sampling,
-66 Hz at 250 Hz sampling,
-131 Hz at 500 Hz sampling.
Maximum battery life: up to 7 hours.
Power supply: built-in lithium-ion battery. Charging:
- Revisions 04 and 05 – Micro USB,
- Revision 06 – USB-C.
Recommended head circumference: 54–60 cm.
Headset material: 3D-printed polymer.
Weight: approximately 110 g.
Weight with wet electrode pads: approximately 120 g.
Dimensions: approximately 200 × 190 × 130 mm.
CE marking: yes.
Medical device status: not a medical device.
500 Hz and 24-bit functionality depends on the Android device or Windows computer used and its Bluetooth module; the manufacturer recommends at least Bluetooth 4.2 for these features.

Software Required for Operation

One of the supported X.on software environments is required to operate the system.
X.on App for Android – software supplied with the kit.
Required operating system: Android 10 or later.
The X.on App for Android allows:
- checking electrode impedance,
- viewing the EEG signal,
- recording data,
- saving data on a mobile device,
- transmitting data via LSL – Lab Streaming Layer,
- accessing EEG data in real time,
- generating a test signal,
- recording additional data from the phone's sensors.
Data can be saved in the BrainVision Core Data Format – BVCDF (.eeg, .vhdr, .vmrk).
Data transmitted via LSL can be recorded on a computer in XDF format.
The manufacturer reserves the right to guarantee full functionality for every device running Android 10 or later.
X.on App for Windows PC – software supplied with the kit. Required operating system: Windows 11 64-bit.
The application enables:
- electrode impedance control,
- creation of an LSL data stream,
- access to raw EEG data in real time,
- integration with programs supporting the Lab Streaming Layer.
Data can be saved on a computer in XDF format using appropriate LSL-compatible software, such as LabRecorder.
Compatible tools, such as LSL Viewer, can be used to monitor LSL data.

Optional PEER Software

PEER is not required for basic operation of the X.on system.
PEER is an additional solution designed primarily for conducting ERP (Event Related Potentials) research.
The PEER app is compatible with Apple devices running iOS 14.1 or later.
Each new X.on kit includes a trial version of PEER, allowing for 10 recordings.
The full version of PEER requires a separate license.
PEER enables:
- conducting ERP experiments,
- impedance control as part of the research procedure,
- raw EEG recording,
- signal preview,
- automatic ERP analysis,
- use of pre-defined and customizable experimental paradigms,

saving and exporting data.
Available paradigms include Visual Oddball, Auditory Oddball, nBack, Go/NoGo, Gambling, and Image Presenter.
Data can be exported, among others. as BVCDF, CSV or PEER Archive.

Intended Use

EEG studies conducted in laboratory settings.
EEG studies conducted outside the laboratory and in conditions similar to the natural environment of the subject.
Mobile recording of electrical brain activity.
Neurophysiological studies.
Scientific and academic research.
Research and development projects using EEG.
Education and demonstrations on EEG and neurophysiology.
Practical classes for students.
Studies requiring the use of multiple mobile EEG sets.
Studies in which the device can be handed over to a participant to conduct sessions outside of a traditional laboratory.
Data recording for subsequent analysis in external software.
Experiments using real-time EEG data transmission via LSL.
ERP studies using optional PEER software.
Recording of raw EEG data for your own analytical and research procedures.
The system is intended for professional, non-medical use only.