Search Results for: speller

  • P300: Basic P300 Speller demo

    ...penViBE P300 demo scenario. For better spelling accuracy, you may be interested in the XDAWN version of the P300 Speller. Using the speller The set of scenarios described here implements the P300 Speller BCI using only the OpenViBE Designer. You will find it in share/openvibe/scenarios/bci-examples/p300-speller. P300 is a well-known pattern in the brainwaves, a positive peak that occurs 300 ms after a relatively rare but expected event. The Spell... Continue reading

    Categories: Example scenarios, Tags: ,
  • P300: Inserm P300 Speller

    ...intensified. After all flashes were presented, the stimulator presents the symbol selected by the OpenViBE P300 Speller scenario via a VRPN protocol. P300 Speller Stimulator settings: Mode: online Background color: Black (RGB: 0 0 0) Letter color: grey (RGB: 0.5 0.5 0.5) Intensification letter color : white (RGB: 1 1 1) Enhancement letter : + 5 pts Number lines: 6, Number columns: 6 Flash duration: 80 ms ISI (Inter Stimulus Interval): 150 ms Nu... Continue reading

  • P300: Basic P300 Speller demo with xDAWN Spatial Filter

    ....2016). This document describes using the OpenViBE P300 demo scenario with the xDAWN spatial filter. Using the speller This set of scenarios implements the P300 Speller BCI using only the OpenViBE Designer. You will find it in share/openvibe/scenarios/bci-examples/p300-speller-xDAWN. P300 is a well-known pattern in the brainwaves, a positive peak that occurs 300 ms after a relatively rare but expected event. The Speller application flashes ran... Continue reading

    Categories: Example scenarios, Tags: , ,
  • P300: CoAdapt P300 Speller (OpenViBE v0.18 only)

    NB: Document based on OpenViBE 0.18.0 The CoAdapt P300 speller is currently working only in the 0.18 version of OpenViBE. The contributing authors are currently developing an even more robust P300 speller that is also easy to use. CoAdapt P300 Stimulator and protocol – tutorial by Maureen Clerc, Dieter Devlaminck & Loïc Mahé @ Inria Sophia Antipolis-Méditerranée. Code developped by Inria & Inserm, funded by CoAdapt project (ANR... Continue reading

    Categories: Deprecated and old documents, Tags: None
  • Using the basic P300 example scenarios of OpenViBE

    NB: Document ONLY concerns OpenViBE 1.1.0 and earlier In OpenViBE 1.1.0 and earlier, the P300 scenarios bundled with OpenViBE in bci-examples/p300-speller* suffer from a glitch that makes them non-precise in some conditions. In order to make them work well you should follow some specific practices. Where is the problem This paragraph explains where is the issue with the current implementation. If you want to simply make P300 work you can saf... Continue reading

  • Documentation

    ...agery BCI with Common Spatial Pattern filter Motor Imagery: Handball demonstrator Neurofeedback P300: Basic P300 Speller demo P300: Basic P300 Speller demo with xDAWN Spatial Filter P300: Magic Card Recording ERPs and other stimulus-driven data SSVEP: Steady-State Visual-Evoked Potentials SSVEP: Using the Mind Shooter scenarios Connecting OpenViBE and other applications Overview: Sending data & stimulations to/from OpenViBE Tutorial: Creating a V... Continue reading

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  • OpenViBE presentation at Quartier des sciences in Paris

    As a part of Fête de la Science in France an event called Quartier des Sciences was held at ESPCI ParisTech (14 to 16 october 2011). A stand presenting works on Brain Computer Interfaces was held by Inria and Inserm. We have presented the Use the Force scenarios and our colleagues from Inserm demonstrated their P300 speller solution. A look at the stands Installation of the Inserm P300 speller application Testing of the connection... Continue reading

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  • Tutorial – Level 1 – Choosing the BCI paradigm

    ...fter tens of flashes. Not usually used to mimic continuous control. OpenViBE distribution includes several P300 speller demos using visual P300. Example of a P300 speller grid. The rows and columns flash in random order while the user focuses on the letter he wants to choose. SSVEP Steady-State Visually Evoked Potentials (SSVEP) is an example of a paradigm where elements flicker steadily on a screen, but with different frequencies. When the... Continue reading

    Categories: Tutorials, Tags: None
  • Old Home

    Important change for code in SVN. We are changing the build system to use CMake to its full power. It is important to clean your source tree of non-versioned files before re-building OpenViBE. Do a fresh checkout for simplicity. OpenViBE 0.15.0 has just been released. You can download the new version immediately. OpenViBE Promotional Video OpenViBE Promotional Video OpenViBE P300 Speller Scenario List of supported EEG ampl... Continue reading

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  • Robotic arm controlled by OpenViBE

    Dieter Devlaminck, researcher at Ghent University, reported his recent results with OpenViBE : controlling a robotic arm thanks to P300 signals. What he did with OpenViBE was basically to derive the xDAWN based P300 signals speller scenarios. Each letter in the grid allows to send a specific command to the robot. Here is a video demonstrating those results:     Warm thanks to Dieter Devlaminck for reporting this work to us! If you w... Continue reading

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