| BrainMaster
Type 2E module & software
What is it? The BrainMaster is a low-cost, flexible, general-purpose brainwave monitor. It connects to a PC in the same way that a modem does; but instead of communicating over the telephone network, it monitors brainwaves. It is immediately useful for applications in biofeedback, research, education, recreation, hobby, self-awareness, art, performance, brainwave-controlled systems, and virtual reality. It provides many of the same basic functions as systems costing many times more, in an innovative yet simple and economical design. Its capabilities include recording 1 or 2 channels of brainwaves or related signals, data storage and retrieval, real-time signal processing and display, plus various forms of control and feedback. It includes many graphical display modes. It is possible to interface with the software, so that various external programs can control the BrainMaster, as well as be controlled, enabling user-developed applications to interact with live brainwave data. Control and data interfaces to Visual Basic, Pascal, C, and C++ are provided. With this device, you can digitally record, store, process, display, and work with brainwaves using any PC with Windows and a spare serial port. You will be able to monitor and display waveform characteristics such as alpha, beta, delta, or theta energy, the amount of symmetry in the brainwaves, or set up the system to respond to your brainwaves by creating displays, sounds, or other effects. This is useful for many applications in which there is a need to record and study brainwaves, to play games using brainwaves, or to use brainwaves to control a system, including interactive simulations and virtual reality displays. NOTE: The BrainMaster is approved by the FDA (K990538) for clinical biofeedback applications. When used for this purpose, federal law restricts its sale to or on the order of a biofeedback practitioner. There is also a version available for nonclinicians. The BrainMaster hardware and software is protected by US Patent # 5,899,867. This device is an outgrowth of the BrainMaster project started by Dr. Thomas F. Collura, for the furthering of the understanding of the brain and the mind. What does it consist of? It consists of a small (paperback book-sized) battery-powered module, Windows-based PC software, and optional electrodes. The module is optically isolated from the PC. It contains 2 EEG amplifiers, a microprocessor controller, and the interface to the PC. The Windows software is used to communicate with the module, acquire brainwave signals, and process and display them. Your PC must be a Pentium/100, or faster, and have a spare COM: (RS-232 or "modem") port. Specifications:Amplifiers (EEG-type): Gain: 20,000 Input Impedance: 10 Megohms Input Noise: <1.5uV p-p Bandwidth: 1.6 - 40 Hz Common-mode rejection: >100dB Communications: HW Interface: RS-232 (female DB-25) Speed: 9600 Baud Isolation: Optically Isolated to 130V (continuous) Digitizer: Type: Successive Approximation Sampling Rate: 120 samples/second Conversion Time: 16 microseconds Channels: 1 or 2 channels of brainwaves (8-channel A/D internal) Resolution: 8 bits Accuracy: ½ LSB Frequency Components (user-adjustable): Delta: 1-4 Hz Theta: 4-7 Hz Alpha: 8-12 Hz Low Beta: 12-15 Hz Beta: 15-20 Hz Hi Beta: 20-38 Hz Gamma: 38-42 Hz Output Controls: .wav file played on each command. proportional pitch sound (with "SoundBlaster") DLL Interface to Visual Basic, C, C++, Pascal DLL can be used to read data from BrainMaster, or to send control information to BrainMaster. Processing: Algorithm: FFT for BrainMirror Window: Hanning; Epoch: 1-second Frequency bin: 1 Hz Update Rate: 4/second Quadrature Filters for training Artifact Rejection: Amplitude Displays: Raw waveform (live and playback) "Chaos" Phase-Space Display. FFT Frequency Spectrum Brain Mirror Frequency Spectrum Compressed Spectral Array "Thermometer" values (alpha, beta, etc) 1-dimensional Trend Line 2-dimensional Trend Line Command Counters "Pac-Man" Game "Boxes" Game Smiling Face Other displays available using DLL interface. Control Modes: Learn Mode:Sets maxima, minima, and thresholds, sets counts to zero. Play Mode: Registers when any component,
or combination of components > threshold; Inhibits when any component,
or combination of components < threshold
Operating Platform: Windows 3.1, Windows 95, Windows 98, Windows NT, OS/2. 8M RAM minimum, <1M disk space to install. Requires Intel 486/50 processor minimum. Also runs on Mac G3 and G4 systems under Virtual PC and Soft Windows!
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