A Brain-Computer Interface for labour market inclusion of people suffering severe upper-limb impairments Thesis

short description

  • Undergraduate thesis

Thesis author

  • García Osorio, Juan Lucas

external tutor

  • Delisle Rodríguez, Denis

abstract

  • Robotic assistive devices, such as exoskeletons are used in labour environments to promote social inclusion of diverse types of impairments as for example upper- limb. Robotic exoskeletons can be controlled by surface electromyography signals. However, people with severe neural impairments and absence of residual muscu- lar activity are unable of using these sEMG-based systems due to the absence of residual muscular activity. Alternatively, robotic hand prostheses and exoskeletons commanded by Brain-Computer Interfaces (BCIs) have been successfully applied in these people. This study aims to develop a low-cost steady-state visual evoked potential (SSVEP)-based BCI for social inclusion, using unsupervised calibration. A low-cost flicker visual stimulator with geometric shapes is proposed to elicit brain commands. Both Canonical Correlation Analysis (CCA) and Power Spectral Den- sity (PSD) are used to classify SSVEP stimuli. As a first step, the proposed BCI was tested in a serious game, which was developed to simulate the workspace, and provide feedback to the subject. CCA presented the best classification results with an accuracy of 71.6 ± 9.7% and an Information Transfer Rate (ITR) of 37.6 ± 15.4 bits/min and averaged latency of 0.77 ± 0.39 s to provide an output associated to the stimulus observed by the subject.

publication date

  • March 5, 2024 7:25 PM

keywords

  • Brain-Computer Interface
  • Serious game
  • Social inclusion
  • Steady State Visual Evoked Po- tential
  • Upper-limb disability

Document Id

  • b6a25bae-068a-45d2-84ff-0a85f3b0df6c