| An SSVEP BCI to Control a Hand Orthosis for Persons With Tetraplegia. | |
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MedLine Citation:
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PMID: 20875978 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Brain-computer interface (BCI) systems allow people to send messages or commands without moving, and hence can provide an alternative communication and control channel for people with limited motor function. In this study, we demonstrate a BCI system for orthosis control. Our BCI was asynchronous, meaning that subjects could move the orthosis whenever they wanted, instead of pacing themselves to external cues. Seven subjects each performed two tasks with a BCI that relied on steady state visual evoked potentials (SSVEPs). Although none of the subjects had any training, six subjects showed good control with a positive predictive value (PPV) higher than 60%. The overall PPV for all subjects reached 78% ±10%. However, the false positive rate was high, and some subjects dislike the flickering lights required in SSVEP BCIs. In follow-up work, we hope to reduce both the false positive rate and the annoyance produced by flickering lights by hybridizing this BCI with a "brain switch," which could allow people to turn the SSVEP system on or off using a second type of brain activity when they do not wish to control the orthosis. We also hope to validate this approach with people with tetraplegia. |
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Authors:
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Rupert Ortner; Brendan Z Allison; Gerd Korisek; Herbert Gaggl; Gert Pfurtscheller |
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Publication Detail:
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Type: Journal Article Date: 2010-09-23 |
Journal Detail:
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Title: IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Volume: 19 ISSN: 1558-0210 ISO Abbreviation: IEEE Trans Neural Syst Rehabil Eng Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-02-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101097023 Medline TA: IEEE Trans Neural Syst Rehabil Eng Country: United States |
Other Details:
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Languages: eng Pagination: 1-5 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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