| Event-related potentials in a moving matrix modification of the P300 brain-computer interface paradigm. | |
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MedLine Citation:
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PMID: 21511006 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In the standard design of the brain-computer interfaces (BCI) based on the P300 component of the event-related potentials (ERP), target and non-target stimuli are presented at fixed positions in a motionless matrix. Can we let this matrix be moving (e.g., if attached to a robot) without loosing the efficiency of BCI? We assessed changes of the positive peak at Pz in the time interval 300-500ms after the stimulus onset (P300) and the negative peak at the occipital electrodes in the range 140-240ms (N1), both important for the operation of the P300 BCI, during fixating a target cell of a moving matrix in healthy participants (n=12). N1 amplitude in the difference (target-non-target) waveforms decreased with the velocity, although remained high (M=-4.3, SD=2.1) even at highest velocity (20°/s). In general, the amplitudes and latencies of these ERP components were remarkably stable in studied types of matrix movement and all velocities of horizontal movement (5, 10 and 20°/s) comparing to matrix in fixed position. These data suggest that, for the users controlling their gaze, the P300 BCI design can be extended to modifications requiring stimuli matrix motion. |
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Authors:
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Sergei L Shishkin; Ilya P Ganin; Alexander Ya Kaplan |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-12 |
Journal Detail:
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Title: Neuroscience letters Volume: - ISSN: 1872-7972 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7600130 Medline TA: Neurosci Lett Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Ireland Ltd. |
Affiliation:
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Lomonosov Moscow State University, Faculty of Biology, Laboratory for Neurophysiology and Neuro-Computer Interfaces, 1/12 Leninskie Gory, Moscow 119991, Russia; National Research Nuclear University MEPhI, Department of Biophysics, Radiation Physics and Ecology, 31 Kashirskoye Shosse, Moscow 119991, Russia. |
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