B-Alert 4 Channel Wireless EEG

The B-Alert X4 features a compact form factor to maximize ease-of-use and comfort in real-world environments. The system delivers real-time, second-by-second B-Alert Cognitive State Metrics. The on-board SD card enables extended recordings for field applications including sleep deprivation or ergonomic studies. For first-time and experienced EEG users, B-Alert X4 is a practical solution for quickly implementing psychophysiological assessment.

Product Features:

  • 3 channels of medical-grade EEG, plus 1 auxiliary channel for ECG, EMG, or EOG
  • (4 Channels @ 256Hz)
  • Real-time delivery of the validated B-Alert Cognitive State Metrics for engagement, distraction, drowsiness, and stress
  • On-board 2GB SD card for data storage
  • Comfortable and non-intrusive; sets up in less than 5 minutes
  • Automated wireless impedance checks
  • Bluetooth wireless signal transmission up to 10 meters
  • 6 hrs rechargeable battery life in wireless mode; 16 hrs in SD card mode
  • On-board accelerometer for head movement & position
  • Data quality monitoring and feedback
  • Real-time access to Raw Data, Decontaminated Data, and Cognitive State Metrics
  • Multiple options for data synchronisation
  • Sizing to fit adolescent through adult heads
  • SDK fully compatible with MatLab, EEGLab and BCI2000

Product Specifications:

Channels 3 EEG with fixed gain, 1 auxiliary differential channel
Sampling rate 256 samples/second, optional 512, or 1024
Dynamic range Fixed gain 1,000 ?V
Resolution 16 bit, CMRR 105 dB
Bandpass characteristics 0.1Hz HPF, 100Hz 5th order LPF
Input impedance 100 G?
Noise ~ +1.5 ?V @ 10 Hz and 50 k? impedance @ 256 s/s
Head movement/position Angles obtained with 3-axis 12-bit accelerometer
RF Band 2.4 to 2.48 GHz (ISM band)
Transmission mode Bi-Directional with B-Alert BT USB dongle
Data transmission range ~ 10 meters, line of sight with onboard antenna
Transmission power Bluetooth Class 2 +4dBm
System power consumption ~ 80 mA @ 3.7 V
Battery capacity Standard 1 x Li-ION batteries – 600 mAH, 7-hrs of continuous use
Battery run time 6 hrs in Bluetooth wireless mode; 16 hrs in SD card mode
Battery charging Via USB cable connected to USB port or USB wall charger
On-line impedance monitoring Initiated by host computer using bi-directional link
Head unit dimensions Size: 2.7(L) x 1.9(W) x 0.8(H); Weight: 2.0 ounces
User control On/Off
Indicator LEDs Green
Compatibility Windows 7 and XP, PC with 2.0 GHz or higher processor & 1 GB of RAM
Estimated file size per minute ~ 45 KB/Min/channel
Sensor Headset & Accessories
Sensor sites Midline Differential: FzPOz, CzPOz
Sensor strip sizes Ships with small & medium; also available with x-small
Electrode cream Highly conductive electrolytes and preservatives in non-ionic, hypoallergenic base, buffered to skin pH

B-Alert X4 Electrode Sites

Real-time GUI displays B-Alert Cognitive State gauges with timeline and EEG spectrograms

B-Alert technology featured in New Scientist Magazine Cover Story

Exclusive distributor Australia & NZ