B-Alert X-series

• Sample channels at 256 Hz each: X24 up to 24 channels, X10 up t 10 channels
• Brain sites and one optional channel for ECG, EOG, or EMG
  • Requires Universal Sensor Strips and Consumables, available in extra small, small, or medium

 X24 for International 10-20 system (+POz) or X10 for reduced International 10-20 system

• Plus—Classify Cognitive States This system includes the B-Alert Cognitive State & Cognitive Workload software with proprietary metrics for real-time monitoring of engagement, confusion/distraction, drowsiness, workload, and stress, and access to accelerometry data (X, Y, Z). Universal sensor strips, purchased separately, include sites used for Cognitive State classifications.
• Comfortable, unobtrusive design enables fast, easy setup
   X24 sets up in about 20 minutes
   X10 lateral and midline montage applied in less than 10 minutes
• Ultra-low profile and comfortable fit allow for 8+ hour recording sessions
• Seamless integration into scenario-specific headgear
• Data quality monitoring and feedback simplifies acquisition for non-technical personnel
• Patented real-time artifact decontamination
• Integrates with AcqKnowledge to combine with multiple physiological signals

The Cognitive States GUI intuitively represents both the raw and processed data for easy understanding by even the untrained user. Each X-series headset requires its own computer, and a max of six (6) headsets can be used in the same room without cross-talk issues, provided that there’s one Bluetooth receiver for each headset.

To facilitate both real-time and offline analysis, the B-Alert gauges are fully customizable to fit the requirements of the user. In the standard format (shown below), the easy-to-read dashboard gauges (top left) and time series (bottom) windows present B-Alert’s highly validated second by second metrics: Engagement, Workload and Drowsiness (along with Heart Rate). Heat maps (top right) display EEG power spectral densities (PSD) in both spatial and temporal maps for the traditional Hz bands (Beta, Alpha, Theta, Sigma).

B-Alert Wireless EEG biometrics are normalized to an individual subject using 5-minutes of baseline data from three distinct tasks with the sleep onset class predicted from the baseline PSD values. A probability-of-fit is then generated for each of the four classes for each epoch with the sum of the probabilities across the four classes equaling 1.0 (e.g., 0.45 high engagement, 0.30 low engagement, 0.20 distraction and 0.05 sleep onset). Cognitive State for a given second represents the class with the greatest probability. B-Alert cognitive state metrics are derived for each one-second epoch using 1 Hz power spectra densities (PSD) bins from differential sites FzPO and CzPO in a four-class quadratic discriminant function analysis (DFA) that is fitted to the individual’s unique EEG patterns. The table below identifies and briefly describes each baseline task, and associates the task with the B-Alert classification.

Watch Tutorial Screencasts now to learn more about BIOPAC hardware, data acquisition, and analysis automation.

B-Alert Systems include AcqKnowledge Acquisition & Analysis Software

AcqKnowledge is an intuitive, interactive program that lets you instantly view, measure, transform, and analyze data. Perform complex data acquisition, stimulation, triggering, and automated analysis routines using simple pull-down menus and dialogs—no need to learn a programming language or new protocol. Online analysis settings, filters, and transformations provide real-time feedback, or you can choose from a wide variety of off-line analysis tools. Multiple display options are available during and after acquisition—just click on an icon to flip between Chart, Scope, X/Y, Overlapped segments, Histogram, or FFT. The software also includes quality presentation capabilities.