Wheelchair Control in a Virtual Environment by Healthy Participants Using a P300-BCI Based on Tactile Stimulation: Training Effects and Usability
Please always quote using this URN: urn:nbn:de:bvb:20-opus-207775
- Tactile stimulation is less frequently used than visual for brain-computer interface (BCI) control, partly because of limitations in speed and accuracy. Non-visual BCI paradigms, however, may be required for patients who struggle with vision dependent BCIs because of a loss of gaze control. With the present study, we attempted to replicate earlier results by Herweg et al. (2016), with several minor adjustments and a focus on training effects and usability. We invited 16 healthy participants and trained them with a 4-class tactile P300-based BCITactile stimulation is less frequently used than visual for brain-computer interface (BCI) control, partly because of limitations in speed and accuracy. Non-visual BCI paradigms, however, may be required for patients who struggle with vision dependent BCIs because of a loss of gaze control. With the present study, we attempted to replicate earlier results by Herweg et al. (2016), with several minor adjustments and a focus on training effects and usability. We invited 16 healthy participants and trained them with a 4-class tactile P300-based BCI in five sessions. Their main task was to navigate a virtual wheelchair through a 3D apartment using the BCI. We found significant training effects on information transfer rate (ITR), which increased from a mean of 3.10–9.50 bits/min. Further, both online and offline accuracies significantly increased with training from 65% to 86% and 70% to 95%, respectively. We found only a descriptive increase of P300 amplitudes at Fz and Cz with training. Furthermore, we report subjective data from questionnaires, which indicated a relatively high workload and moderate to high satisfaction. Although our participants have not achieved the same high performance as in the Herweg et al. (2016) study, we provide evidence for training effects on performance with a tactile BCI and confirm the feasibility of the paradigm.…
Author: | Matthias Eidel, Andrea Kübler |
---|---|
URN: | urn:nbn:de:bvb:20-opus-207775 |
Document Type: | Journal article |
Faculties: | Fakultät für Humanwissenschaften (Philos., Psycho., Erziehungs- u. Gesell.-Wissensch.) / Institut für Psychologie |
Language: | English |
Parent Title (English): | Frontiers in Human Neuroscience |
ISSN: | 1662-5161 |
Year of Completion: | 2020 |
Volume: | 14 |
Article Number: | 265 |
Source: | Frontiers in Human Neuroscience 2020, 14:265. doi: 10.3389/fnhum.2020.00265 |
DOI: | https://doi.org/10.3389/fnhum.2020.00265 |
Dewey Decimal Classification: | 1 Philosophie und Psychologie / 15 Psychologie / 150 Psychologie |
Tag: | P300; brain-computer interface (BCI); event-related-potential (ERP); replication; tactile; tactually evoked potentials; wheelchair control |
Release Date: | 2021/03/04 |
Date of first Publication: | 2020/07/10 |
Open-Access-Publikationsfonds / Förderzeitraum 2020 | |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |