Auditory Brain-Computer Interface Paradigm with Head Related Impulse Response-based Spatial Cues
This addresses the problem of improving auditory BCI spellers for potential users by offering a simpler spatial sound reproduction method, though it is incremental as it builds on existing paradigms.
The study tested a head related impulse response (HRIR) method for an auditory spatial speller brain-computer interface (BCI) with six users, finding it produced stable P300-responses and could be a viable alternative to multi-loudspeaker setups for healthy users.
The aim of this study is to provide a comprehensive test of head related impulse response (HRIR) for an auditory spatial speller brain-computer interface (BCI) paradigm. The study is conducted with six users in an experimental set up based on five Japanese hiragana vowels. Auditory evoked potentials resulted with encouragingly good and stable "aha-" or P300-responses in real-world online BCI experiments. Our case study indicated that the auditory HRIR spatial sound reproduction paradigm could be a viable alternative to the established multi-loudspeaker surround sound BCI-speller applications, as far as healthy pilot study users are concerned.