Multi-command Tactile and Auditory Brain Computer Interface based on Head Position Stimulation
This paper explores a new way to help people with severe disabilities communicate using their sense of touch and hearing. By sending vibrations to the head and using sound, the researchers created a system that allows users to control devices without needing.
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- 1 Alternative solutions have been proposed to utilize spatial auditory or tactile modalities to enhance brain-computer interface comfort or boost the information transfer rate achieved by users.
- 2 No electromagnetic interference was observed with the vibrotactile exciters attached to the head.
- 3 The first successful trial to utilize somatosensory modality to create a BCI targeted a very low stimulus frequency in a range of 20-31 Hz to elucidate the subject's attentional modulation of steady-state responses.
- 4 Encouraging results were obtained with 7.8 bit\/min on average and 27 bit\/min for the best subject.
Introduction
State-of-the-art BCI relies mostly on mental visual and motor imagery paradigms that require long training and non-impaired vision of the subjects. The concept of utilizing brain somatosensory modality opens up the possibility of targeting the tactile sensory domain, which is not as demanding as vision during the operation of robotic interfaces or visual computer applications.
This offers a viable alternative for individuals lacking somatosensory responses from the fingers.
Eleven BCI-na\u00efve subjects took part in the experiments reported in this paper.
Methodology
A recent report proposed using a Braille stimulator with 100 ms long static push stimuli delivered to six fingers to evoke somatosensory response related P300. We propose to combine the two above-mentioned modalities in a taBCI paradigm that relies on a P300 response evoked by audio and tactile stimuli delivered simultaneously via vibrotactile exciters attached to positions on the head to benefit ALS-TLS patients with compromised vision and hearing.
Study Design
The 100 ms long stimuli in the form of 350 Hz sinusoidal waves were delivered to areas of the subjects’ heads via the tactile exciters HiWave HIAX19C01-8.
The recorded EEG signals were processed by an in-house enhanced BCI2000 application using a linear discrimination analysis classifier with features drawn from 0-600 ms event related potential intervals.
Results & Findings
Alternative solutions have been proposed to utilize spatial auditory or tactile modalities to enhance brain-computer interface comfort or boost the information transfer rate achieved by users. The first successful trial to utilize somatosensory modality to create a BCI targeted a very low stimulus frequency in a range of 20-31 Hz to elucidate the subject’s attentional modulation of steady-state responses.
- Alternative solutions have been proposed to utilize spatial auditory or tactile modalities to enhance brain-computer interface comfort or boost the information transfer rate achieved by users.
- The first successful trial to utilize somatosensory modality to create a BCI targeted a very low stimulus frequency in a range of 20-31 Hz to elucidate.
- Encouraging results were obtained with 7.8 bit\/min on average and 27 bit\/min for the best subject.
- No electromagnetic interference was observed with the vibrotactile exciters attached to the head.
- The results of online BCI interfacing sessions are summarized in Table 1 in the form of mean accuracies above the theoretical chance level of 16.6%.
Alternative solutions have been proposed to utilize spatial auditory or tactile modalities to enhance brain-computer interface comfort or boost the information transfer rate achieved by users.
No electromagnetic interference was observed with the vibrotactile exciters attached to the head.
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- Fig. 1: Averaged ERP responses and AUC discrimination coefficient plots.. Illustrates the effectiveness of the electrode placements and the brain’s response to the stimuli.
Frequently Asked Questions
The electrodes were attached to the following head locations Cz, CPz, P3, P4, C3, C4, CP5, and CP6, as in the 10\/10 extended international system. The subjects’ hands were additionally grounded with armbands connected to the amplifier ground to limit electromagnetic interference.
The 100 ms long stimuli in the form of 350 Hz sinusoidal waves were delivered to areas of the subjects’ heads via the tactile exciters HiWave HIAX19C01-8. The recorded EEG signals were processed by an in-house enhanced BCI2000 application using a linear.
Alternative solutions have been proposed to utilize spatial auditory or tactile modalities to enhance brain-computer interface comfort or boost the information transfer rate achieved by users. No electromagnetic interference was observed with the vibrotactile exciters attached to the head.
This paper explores a new way to help people with severe disabilities communicate using their sense of touch and hearing. By sending vibrations to the head and using sound, the researchers created a system that allows users to control devices without needing.
Yes. PDFDigest can turn this paper into a structured explanation, key takeaways, visual summaries, and a narrated video when available.