Gamma recorder is a simple yet powerful function for monitoring biomedical signals in real-time and capturing the signals reliably to disk. In this mode, Gamma emulates a traditional chart recorder scrolling the signals across the screen. Simulated chart speeds are available and the display sensitivities are easily changed on a channel by channel basis without altering the stored data. Gamma also supports additional important real-time functions including event marking, precise calibration, user scaling, and digital filtering.

Features include:
•Ready to run data acquisition of up to 36 channels
• Acquire data in calibrated units (µV, mV, mmHg, etc.) for easy measurements and signal statistics
• Sampling rate from 1 to 1000 samples/second/channel
• Continuous real-time display of data
• Real-time "look back" to beginning of record
• Pre-programmed and "on-the-fly" annotations
• Real-time digital filtering
• User-defined, fully selectable display views

Gamma provides two methods of utilizing the on-screen cursors for making signal measurements. The cursors can be manually positioned by dragging or by a point-and-click method. Both methods allow Plug-ins to be accessed and will provide information about single-channel parameters including amplitudes, times, latencies, frequency and more complex tools including FFTs.

Features:
• Ready to run analysis tools for measuring physiological signals
• Plug-ins such as FFT Spectral analysis, Zoom and Trend
• Export data to ASCII format for use in other applications
• Supports EDF (European Data Format) import/export
• Optional application specific Plug-ins available

Gamma can accommodate new special purpose Plug-ins allowing users to customize data analysis. This advanced research tool allows custom analysis functionality to be added to the review program.

Gamma reviewer is a powerful software module designed to provide record review similar to paging through traditional chart recordings page by page. The digital recording process, however, allows much greater flexibility by offering time base expansion/contraction, digital filtering, display gain changes, and powerful, GoTo functions. Gamma provides scoring tools for marking recorded events with and without duration. A cessation of breathing on a respiratory flow channel is an example of an event with duration.

Features:
• Keyboard and mouse file navigation
• Sleep staging at 30 second epochs using numeric keypad is available
• On-screen cursors for measurements and data selection
• Channel buttons provide access to display gain, digital filters, and other trace properties
• Events list window for viewing marked events including a GoTo for quick file navigation to any data file event
• Events chart provides scatter plot of marked events
• Comments feature saves important information with the recording
• Easy-to-read status indicators for page #, time, view settings
• File compatibility with Rodent Sleep Stager

The Auto-Analysis/Report Generator options are built-in features intended for human sleep scoring. The Auto-Analysis module includes a standard set of algorithms with adjustable settings for the detection of respiratory events, desaturations, EMG bursts, Snoring events, and heart rate analysis.

The Report Generator generates a comprehensive summary of the human sleep-wake cycle including a hypnogram, and detailed information about the recording montage, subject demographics, and events that occurred during the recording session. Exportation to Excel, databases, and ASCII is included.