Brain-computer interface using fMRI: spatial navigation by thoughts |
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Authors: | Yoo Seung-Schik Fairneny Ty Chen Nan-Kuei Choo Seh-Eun Panych Lawrence P Park HyunWook Lee Soo-Young Jolesz Ferenc A |
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Affiliation: | Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA. yoo@bwh.harvard.edu |
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Abstract: | A brain-computer interface (BCI) is a way of conveying an individual's thoughts to control computer or electromechanical hardware. Capitalizing on the ability to characterize brain activity in a reproducible manner, we explored the possibility of using real-time fMRI to interpret the spatial distribution of brain function as BCI commands. Using a high-field (3T) MRI scanner, brain activities associated with four distinct covert functional tasks were detected and subsequently translated into predetermined computer commands for moving four directional cursors. The proposed fMRI-BCI method allowed volunteer subjects to navigate through a simple 2D maze solely through their thought processes. |
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