TY - GEN
T1 - A vision-free brain-computer interface (BCI) paradigm based on auditory selective attention
AU - Kim, Do Won
AU - Cho, Jae Hyun
AU - Hwang, Han Jeong
AU - Lim, Jeong Hwan
AU - Im, Chang Hwan
PY - 2011
Y1 - 2011
N2 - Majority of the recently developed brain computer interface (BCI) systems have been using visual stimuli or visual feedbacks. However, the BCI paradigms based on visual perception might not be applicable to severe locked-in patients who have lost their ability to control their eye movement or even their vision. In the present study, we investigated the feasibility of a vision-free BCI paradigm based on auditory selective attention. We used the power difference of auditory steady-state responses (ASSRs) when the participant modulates his/her attention to the target auditory stimulus. The auditory stimuli were constructed as two pure-tone burst trains with different beat frequencies (37 and 43 Hz) which were generated simultaneously from two speakers located at different positions (left and right). Our experimental results showed high classification accuracies (64.67%, 30 commands/min, information transfer rate (ITR) 1.89 bits/min; 74.00%, 12 commands/min, ITR 2.08 bits/min; 82.00%, 6 commands/min, ITR 1.92 bits/min; 84.33%, 3 commands/min, ITR 1.12 bits/min; without any artifact rejection, inter-trial interval 6 sec), enough to be used for a binary decision. Based on the suggested paradigm, we implemented a first online ASSR-based BCI system that demonstrated the possibility of materializing a totally vision-free BCI system.
AB - Majority of the recently developed brain computer interface (BCI) systems have been using visual stimuli or visual feedbacks. However, the BCI paradigms based on visual perception might not be applicable to severe locked-in patients who have lost their ability to control their eye movement or even their vision. In the present study, we investigated the feasibility of a vision-free BCI paradigm based on auditory selective attention. We used the power difference of auditory steady-state responses (ASSRs) when the participant modulates his/her attention to the target auditory stimulus. The auditory stimuli were constructed as two pure-tone burst trains with different beat frequencies (37 and 43 Hz) which were generated simultaneously from two speakers located at different positions (left and right). Our experimental results showed high classification accuracies (64.67%, 30 commands/min, information transfer rate (ITR) 1.89 bits/min; 74.00%, 12 commands/min, ITR 2.08 bits/min; 82.00%, 6 commands/min, ITR 1.92 bits/min; 84.33%, 3 commands/min, ITR 1.12 bits/min; without any artifact rejection, inter-trial interval 6 sec), enough to be used for a binary decision. Based on the suggested paradigm, we implemented a first online ASSR-based BCI system that demonstrated the possibility of materializing a totally vision-free BCI system.
UR - https://www.scopus.com/pages/publications/84863596910
U2 - 10.1109/IEMBS.2011.6090623
DO - 10.1109/IEMBS.2011.6090623
M3 - Conference contribution
C2 - 22255139
AN - SCOPUS:84863596910
SN - 9781424441211
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 3684
EP - 3687
BT - 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011
T2 - 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2011
Y2 - 30 August 2011 through 3 September 2011
ER -