Guessing What's on Your Mind: Using the N400 in Brain Computer Interfaces

Vliet van, W.M. and Mühl, Christian and Reuderink, Boris and Poel, Mannes (2010) Guessing What's on Your Mind: Using the N400 in Brain Computer Interfaces. In: International Conference on Brain Informatics, BI 2010, 28-30 August, Toronto, Canada.

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Abstract:	In this paper, a method is proposed for using a simple neurophysiological brain response, the N400 potential, to determine a deeper underlying brain state. The goal is to construct a BCI that can determine what the user is ‘thinking about’, where ‘thinking about’ is defined as being primed on. The results indicate that a subject can prime himself on a physical object by actively thinking about it during the experiment, as opposed to being shown explicit priming stimuli. Probe words are presented that elicit an N400 response which amplitude is modulated by the associative relatedness of the probe word to the object the user has primed himself on.
Item Type:	Conference or Workshop Item
Copyright:	© 2010 Springer
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Human Media Interaction (HMI)
Link to this item:	http://purl.utwente.nl/publications/73227
Official URL:	http://dx.doi.org/10.1007/978-3-642-15314-3_17
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