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RealTime Biosignal Workstation

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The RealTime Biosignal Workstation is a system for acquisition and real-time analysis of biosignals. Due to its flexible design, it is qualified for various medical applications, such as

Multi-dimensional feedback is an extremely enhanced form of classical feedback, incorporating integrative acquisition and mathematical combination of all kinds of biosignals, as well as user-definable mapping of biological characteristica to different visual and acoustic dimensions.


High Resolution Biosignal Acquisition System (HR-BAS) Hardware for high resolution, integrated acquisition of the following biosignals: EEG, DC-EEG, ECG, EMG (Electromyogram, muscle activity), EOG (Electrooculogram, eye movement), EDA (electrodermal activity, e.g. skin potentials), respiration, temperature, and pulse.

Data analysis, display, and visual and acoustic output are performed on Intel-Pentium based notebooks and PC's running the NEXTSTEP operating system.


The RealTime software consists of a network of preprocessing, analysis, display, and sound modules, which may be assigned to biosignal channels and connected to each other in a flexible, unconstrained way. Such a network is easily 'drawn' by clicking and dragging with the mouse, and can be modified at will -- even during a recording session!

Acoustic output is either done by control of external MIDI synthesizers and samplers, or by utilizing the CD compatible audio interface. Playback of predefined samples. Sound synthesis in real-time, using the biosignals as sound 'sources'. Due to usage of arbitrary, user-defined graphic and sound files, the possibilities for stimulation and feedback are virtually unlimited.

Execution of the RealTime software can be distributed over multiple computers -- i.e. the software runs on multiple hosts concurrently, with biosignal data as well as analysis results being simultaneously available for further processing on all hosts connected to a local network.


Perhaps the most remarkable feature is the flexible hardware and software concept: a high-quality, integrated acquisition of various biosignals, the user-definable, complex analysis in real-time, and the virtually unconstrained conversion of analysis results into visual and acoustic output are unequalled by any other system today.

Real-time design Processing and analysis in real-time, with on-line display of signals as well as of all analysis results. Module settings may interactively be changed during a recording session; changes are reflected immediately. All interactions are stored in protocols for later replay.

Experimental and routine operation All settings and sequences for data acquisition, data processing, display, the way of transformation of real-time results into stimulus parameters etc. may be defined in advance or during the session, in order to have these new procedures available for future use. Thus, new routine procedures are quickly and easily developed and optimized.

Flexible network of analysis and output modules The RealTime system can easily be adapted to new demands and analysis schemes -- especially important for experimental research. This flexibility is never obtained by application-specific systems.

Parallel distributed processing The RealTime software can be executed on multiple computers concurrently, with biosignal data as well as analysis results being simultaneously available for further processing on all hosts connected to a local network. For instance, imagine a two-computer system, with one host for the operator supervising an experiment, and the other one for, say, a feedback test person, perhaps in a separate room. Or use multiple distributed acquisition and analysis hosts for multi-person simultaneous feedback, or just for extended plain processing power.

Combined live and playback operation Raw as well as processed data can be output to disk, and then played back synchronously in time with a live recording. This offers new ways of correlated analysis/display of live and playback data.

Multimedia capabilities The RealTime Biosignal Workstation is the first biosignal system with true multi-media capabilities, due to high-quality, virtually unlimited visual and acoustic feedback and stimulation possibilities through usage of arbitrary, user-defined graphic and sound effects.

Graphical user interface The RealTime software runs on the NEXTSTEP operating system, and has an easy and intuitive graphical user interface. No knowledge of underlying OS mechanics is required.

Fields of Application

  • monitoring
  • EEG
  • feedback therapy
  • feedback aided physicotherapy
  • prevention
  • art
  • other

  • For more information please contact:

    IBE - Institute for Biosignal-Engineering
    Hainbachg. 38
    A-1140 Vienna
    fon +43-1-5771899
    fax +43-1-5771899-9
    We do have email, please send a fax or call.