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Brain-computer interface using fMRI: spatial navigation by thoughts
Authors:Yoo Seung-Schik  Fairneny Ty  Chen Nan-Kuei  Choo Seh-Eun  Panych Lawrence P  Park HyunWook  Lee Soo-Young  Jolesz Ferenc A
Affiliation:Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA. yoo@bwh.harvard.edu
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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