Targeting an efficient target-to-target interval for P300 speller brain–computer interfaces
نویسندگان
چکیده
منابع مشابه
P300 amplitude is determined by target-to-target interval.
P300 event-related brain potential (ERP) measures are affected by target stimulus probability, the number of nontargets preceding the target in the stimulus sequence structure, and interstimulus interval (ISI). Each of these factors contributes to the target-to-target interval (TTI), which also has been found to affect P300. The present study employed a variant of the oddball paradigm and manip...
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It has been suggested that the P300 component of the ERP is an electrophysiological index of memory-updating processes associated with task-relevant stimuli. Component magnitude varies with the time separating target stimuli (target-to-target interval: TTI), with longer TTIs eliciting larger P300 amplitudes. According to the template-update perspective, TTI effects observable in the P300 reflec...
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The P300 is an endogenous event-related potential (ERP) that is naturally elicited by rare and significant external stimuli. P300s are used increasingly frequently in brain-computer interfaces (BCIs) because the users of ERP-based BCIs need no special training. However, P300 waves are hard to detect and, therefore, multiple target stimulus presentations are needed before an interface can make a...
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ژورنال
عنوان ژورنال: Medical & Biological Engineering & Computing
سال: 2012
ISSN: 0140-0118,1741-0444
DOI: 10.1007/s11517-012-0868-x