Head-related Impulse Response-based Spatial Auditory Brain-computer Interface
This work addresses the problem of improving auditory BCI spellers for users by offering a potentially simpler and more accessible alternative to existing surround sound systems, though it appears incremental as it builds on established paradigms.
The study tested a head-related impulse response (HRIR) spatial auditory paradigm for a brain-computer interface (BCI) speller, comparing it to a conventional virtual headphone method, and found it produced stable P300-responses in online experiments with five users, indicating it could be a viable alternative to multi-loudspeaker setups.
This study provides a comprehensive test of the head-related impulse response (HRIR) to an auditory spatial speller brain-computer interface (BCI) paradigm, including a comparison with a conventional virtual headphone-based spatial auditory modality. Five BCI-naive users participated in an experiment based on five Japanese vowels. The auditory evoked potentials obtained produced encouragingly good and stable P300-responses in online BCI experiments. Our case study indicates that the auditory HRIR spatial sound paradigm reproduced with headphones could be a viable alternative to established multi-loudspeaker surround sound BCI-speller applications.