Documenting, modelling and exploiting P300 amplitude changes due to variable target delays in Donchin's speller
نویسندگان
چکیده
منابع مشابه
Documenting, modelling and exploiting P300 amplitude changes due to variable target delays in Donchin's speller.
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...
متن کاملDocumenting, modelling and exploiting P300 amplitude changes in a BCI
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...
متن کاملP300 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...
متن کاملPolyMorph: A P300 Polymorphic Speller
P300 is an electric signal emitted by brain about 300 milliseconds after a rare, but relevant-for-the-user event. Even if it is hard to identify and it provides a low-rate communication channel, it raises the interest of the scientific community because it can be used in cases in which other evoked potentials fail. One of the applications of this signal is a speller that enables subjects who lo...
متن کاملIs the P300 Speller Independent?
The P300 speller is being considered as an independent brain–computer interface. That means it measures the user’s intent, and does not require the user to move any muscles. In particular it should not require eye fixation of the desired character. However, it has been shown that posterior electrodes provide significant discriminative information, which is likely related to visual processing. T...
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ژورنال
عنوان ژورنال: Journal of Neural Engineering
سال: 2010
ISSN: 1741-2560,1741-2552
DOI: 10.1088/1741-2560/7/5/056006