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 synchronization
- Sizing to fit adolescent through adult heads
- SDK fully compatible with MatLab, EEGLab and BCI2000
Product Specifications:
| HARDWARE | |
| 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 μV |
| Resolution | 16 bit, CMRR 105 dB |
| Bandpass characteristics | 0.1Hz HPF, 100Hz 5th order LPF |
| Input impedance | 100 GΩ |
| Noise | ~ +1.5 μV @ 10 Hz and 50 kΩ 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 |
| SOFTWARE | |
| 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
Electrode sites
Click to view full size (Pop-up)
Real-time GUI displays B-Alert Cognitive State gauges with timeline and EEG spectrograms
On-board 2GB SD card stores up to 200 hours of acquired data