Brain-computer interface(BCI)presented by the non-invasive electroencephalography(EEG)cap/band or implantable chips enabling people to fast and reliable control computers or mobile devices with thoughts has redefined ...Brain-computer interface(BCI)presented by the non-invasive electroencephalography(EEG)cap/band or implantable chips enabling people to fast and reliable control computers or mobile devices with thoughts has redefined the boundaries of human capabilities.However,the existing cap/band-adhered sticky gel usually needs to be tightly fixed on the scalp through the hair to ensure intimate contact,which inconveniences the user.And the implantable chips represented by Neuralink gave a living example of how BCI can make quadriplegic live better,but the destructive unacceptable for healthy people.Here we proposed a multichannel wearable ear-computer interface(ECI)patch worn behind the ears for direct communication and control via brain activity.The 8-channel ECI patch based on MXene electrode was prepared by a facile direct inject print approach on the soft,thin,and breathable medical film that enables superior adherence.The fatigue induction experiments tested by the ECI patch offer an average classification accuracy of 90.5%,showing effective monitoring of the fatigue state.Participants wearing the ECI patch also perform the 4-target steady state visual evoked potential(SSVEP)BCI classification offline and online experiment,the online 4-route tasks reap a comparable average accuracy of 93.5%to the commercial cap.Moreover,the complex route task relied on the subjects who gave commands while observing the unmanned vehicle completed 3 times,demonstrating the reliability and possibility of the ECI patch.展开更多
基金supported by the National Natural Science Foundation of China (62474019 and 62088101)the Beijing Natural Science Foundation (L223006).
文摘Brain-computer interface(BCI)presented by the non-invasive electroencephalography(EEG)cap/band or implantable chips enabling people to fast and reliable control computers or mobile devices with thoughts has redefined the boundaries of human capabilities.However,the existing cap/band-adhered sticky gel usually needs to be tightly fixed on the scalp through the hair to ensure intimate contact,which inconveniences the user.And the implantable chips represented by Neuralink gave a living example of how BCI can make quadriplegic live better,but the destructive unacceptable for healthy people.Here we proposed a multichannel wearable ear-computer interface(ECI)patch worn behind the ears for direct communication and control via brain activity.The 8-channel ECI patch based on MXene electrode was prepared by a facile direct inject print approach on the soft,thin,and breathable medical film that enables superior adherence.The fatigue induction experiments tested by the ECI patch offer an average classification accuracy of 90.5%,showing effective monitoring of the fatigue state.Participants wearing the ECI patch also perform the 4-target steady state visual evoked potential(SSVEP)BCI classification offline and online experiment,the online 4-route tasks reap a comparable average accuracy of 93.5%to the commercial cap.Moreover,the complex route task relied on the subjects who gave commands while observing the unmanned vehicle completed 3 times,demonstrating the reliability and possibility of the ECI patch.
