A Brain Computer Interface for Communication Using Real-Time fMRI
2010 (English)In: Proceedings of the 20th International Conference on Pattern Recognition, Los Alamitos, CA, USA: IEEE Computer Society, 2010, 3665-3669 p.Conference paper (Refereed)
We present the first step towards a brain computer interface (BCI) for communication using real-time functional magnetic resonance imaging (fMRI). The subject in the MR scanner sees a virtual keyboard and steers a cursor to select different letters that can be combined to create words. The cursor is moved to the left by activating the left hand, to the right by activating the right hand, down by activating the left toes and up by activating the right toes. To select a letter, the subject simply rests for a number of seconds. We can thus communicate with the subject in the scanner by for example showing questions that the subject can answer. Similar BCI for communication have been made with electroencephalography (EEG). The subject then focuses on a letter while different rows and columns of the virtual keyboard are flashing and the system tries to detect if the correct letter is flashing or not. In our setup we instead classify the brain activity. Our system is neither limited to a communication interface, but can be used for any interface where five degrees of freedom is necessary.
Place, publisher, year, edition, pages
Los Alamitos, CA, USA: IEEE Computer Society, 2010. 3665-3669 p.
, International Conference on Pattern Recognition, ISSN 1051-4651
Biomedical MRI, Medical image processing, Real-time systems
Biomedical Laboratory Science/Technology Control Engineering
IdentifiersURN: urn:nbn:se:liu:diva-54038DOI: 10.1109/ICPR.2010.894ISBN: 978-1-4244-7542-1OAI: oai:DiVA.org:liu-54038DiVA: diva2:297936
20th International Conference on Pattern Recognition, Istanbul, Turkey, 23-26 August 2010
©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Anders Eklund, Mats Andersson, Henrik Ohlsson, Anders Ynnerman and Hans Knutsson, A Brain Computer Interface for Communication Using Real-Time fMRI, 2010, Proceedings from the 20th International Conference on Pattern Recognition (ICPR), 3665-3669. http://dx.doi.org/10.1109/ICPR.2010.8942010-02-192010-02-192015-09-22Bibliographically approved