Community for researchers who work with or are interested in BCIs and their applications.

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    K Jeffrey Eriksen replied

    Sorry, I did not read your full question - you wanted a Matlab toolbox. MNE is partially command line (Linux and Mac), and partially Matlab. You might be able to do most tasks with their MatlabSorry, I did not read your full question - you wanted a Matlab toolbox. MNE is partially command line (Linux and Mac), and partially Matlab. You might be able to do most tasks with their Matlab functions, but I am still learning about it myself right now. sLORETA is in no way Matlab compatible.

    11 days ago
• Marvin Berman

  Can LORETA analysis of the surface EEG be utilized for developing simple reliable language responses in brain injured or minimally conscious people?

  We are seeking to create simple yes/no responses to questions addressed to people with severe brain trauma who can not speak or otherwise indicate discriminative responses.

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    Ann ali Abdelkader Hanafy replied

    You can download this book from scribd

    13 days ago
• Rhycardo Monteiro

  Non-contact EEG sensors

  I need some practical suggestions for designing a data acquisition subsystem to a BCI. I am interested in sensors that do not require contact with the brain. I've read something about Photrodes. AreI need some practical suggestions for designing a data acquisition subsystem to a BCI. I am interested in sensors that do not require contact with the brain. I've read something about Photrodes. Are there other options?

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    Jorge Leon Morales Quezada replied

    I am not sure how reliable is the technology for non-contact electrodes, especially if you understand the neurophysiology of eeg and NIRS

    18 days ago

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    Sean Lorenz replied

    I agree that there is definitely a limitation to what one can decipher from EEG signal in a BCI, yet there is plenty to do with taking BCIs out of the lab and into the real world. At BostonI agree that there is definitely a limitation to what one can decipher from EEG signal in a BCI, yet there is plenty to do with taking BCIs out of the lab and into the real world. At Boston University we've started something called the Unlock Project where we are about to start giving away full SSVEP-based BCIs that are fully functional on a laptop. We have built practical, Python-based apps for speech communication, controlling your tv with a "laserbot" and browsing the internet. The idea is to move beyond BCI bit-rate and start thinking of actual human computer interface issues for ALS and locked-in users.

    Mar 31, 2012
• Luis Luis

  Independent and dependent BCI vs Exogenous BCI and Endogenous BCI

  The BCIs can be categorized into (i) dependent or independent (ii) exogenous or endogenous. From my point of view, both criteria are very similar. The advantages of dependent BCI and exogneous BCIThe BCIs can be categorized into (i) dependent or independent (ii) exogenous or endogenous. From my point of view, both criteria are very similar. The advantages of dependent BCI and exogneous BCI are the same. The same consideration applies in the case of independent BCI and endogenous BCI Then, what is the difference betweeen independent BCI and endogenous BCI? Likewise, what is the difference betweeen dependent BCI and exogenous BCI? I hope someone can give me an answer. Thank in advance.

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    Fabien Lotte replied

    In my understanding, dependent means that the BCI does require some control over peripheral nerves and muscles (e.g., eye gaze control), whether independent BCI solely rely on brain activity.In my understanding, dependent means that the BCI does require some control over peripheral nerves and muscles (e.g., eye gaze control), whether independent BCI solely rely on brain activity. Endogenous means the BCI is based only on spontaneously generated brain patterns (e.g., motor imagery) whereas exogeneous means the BCI is based on brain responses to external stimulus (e.g., P300). If I am not wrong, by definition, endogenous BCI are necessarily independent. However, exogenous BCI can be either independent or dependent. For instance an SSVEP-based BCI that does not require the user to gaze at the target would be independent (see, e.g., the work of Brendan Allison on this topic) whereas an SSVEP-based BCI that requires the user to gaze at the target would be dependent, since it requires gaze control (many, if not most SSVEP-based BCI are dependent). There are also some recent work by Peter Brunner which suggested that P300-speller may not be independent. I hope this answers your question. Best regards, Fabien Lotte

    Mar 30, 2012
• Rodrigo Ramele

  Do you know a good book on Multivariate Analysis or Factor Analysis?

  In BCI we use a lot of tools and techniques from MVA but sometimes we need to move a little bit deeper on the topic. It will be great to know which books the BCI research community is using. Thanks!

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• Archana Vijayakumaran

  Suggestions on how to create a matlab GUI for brain computer interface.

  I am doing a project on brain computer interface for cursor movement . I wanted to create a matlab GUI to display the results. If anybody has any ideas about it please do suggest.

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    Fabien Lotte replied

    Do you want it to be in Matlab only, or are you open to other languages or software? Indeed, there are already a number of free and open source BCI platforms available, most of which coming withDo you want it to be in Matlab only, or are you open to other languages or software? Indeed, there are already a number of free and open source BCI platforms available, most of which coming with existing tools to provide feedback to the user, such as cursor movement. These platforms include OpenVIBE, BCI2000, BCILab, Biosig, FieldTrip, etc. (the last 3 are based on Matlab by the way). You can find more info about these platforms in this paper: sccn.ucsd.edu/~scott/pdf/Brunner_BCI11.pdf

    Mar 12, 2012
• Katarzyna Zarnowiec

  P300 signal processing problems

  Hi, I would like to kindly ask you for help. I am doing my first BCI P300 project and found some difficulties in Signal Processing. There are sequences of 5 different stimuli in my experiment.Hi, I would like to kindly ask you for help. I am doing my first BCI P300 project and found some difficulties in Signal Processing. There are sequences of 5 different stimuli in my experiment. Each is equally probable, the user have to pay attention to one target stimuli indicated randomly in the beginning of the session. The target stimuli is 20% vs. non-target 80%. I would like to find P300 wave. I have extracted epochs and filtered the signal. Now I would like to do averaging and LDA. Can you help me with this? I do not know which data I should use in computations. For averaging I should use all targets (stimuli1-5) vs all non-targets? Or let's say I would like to have data for stimuli1, should I use data for stimuli1-target vs. data for stimuli1-non-target? Or maybe data for stimuli1-target vs. data for stimuli2-5(non-targets)? I will be very grateful for any help. I went through many articles but somehow I didn't find the answer. Maybe could you recommend me any books/articles?

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    Katarzyna Zarnowiec replied

    Thank you for your answer and the article, I find it very helpful :)

    Jun 30, 2011
• Jorge Leon Morales Quezada

  OpenVibe

  Does some body has any clinical experience with the OpenVibe generic software for BCI?

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    Jorge Leon Morales Quezada replied

    Thanks Fabien, I will try my French! I'm interested in motor learning and VR and its possible clinical applications. Thanks one more time and will follow your advice.

    Apr 6, 2011
• Jorge Leon Morales Quezada

  real time fMRI neurofeedback

  Mario Beauregard from Montreal University is using real-time fMRI neurofeedback

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