%0 Journal Article %J Expert review of medical devices %D 2007 %T Brain-computer interface systems: progress and prospects. %A Brendan Z. Allison %A Wolpaw, Elizabeth Winter %A Jonathan Wolpaw %K ALS %K assistive communication %K BCI %K BMI %K brain-acuated control %K brain-computer interface %K brain-machine interface %K EEG %K ERP %K locked-in syndrome %K slow cortical potential %K SSVEP %K Stroke %X Brain-computer interface (BCI) systems support communication through direct measures of neural activity without muscle activity. BCIs may provide the best and sometimes the only communication option for users disabled by the most severe neuromuscular disorders and may eventually become useful to less severely disabled and/or healthy individuals across a wide range of applications. This review discusses the structure and functions of BCI systems, clarifies terminology and addresses practical applications. Progress and opportunities in the field are also identified and explicated. %B Expert review of medical devices %V 4 %P 463–474 %8 07/2007 %G eng %U http://www.ncbi.nlm.nih.gov/pubmed/17605682 %R 10.1586/17434440.4.4.463