Hybrid P300-based brain-computer interface to improve usability for people with severe motor disability

Electromyographic signals for error correction during a spelling task

Angela Riccio, Elisa Mira Holz, Pietro Aricò, Francesco Leotta, Fabio Aloise, Lorenzo Desideri, Matteo Rimondini, Andrea Kübler, Donatella Mattia, Febo Cincotti

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Objective To evaluate the impact of a hybrid control on usability of a P300-based brain-computer interface (BCI) system that was designed to control an assistive technology software and was integrated with an electromyographic channel for error correction. Design Proof-of-principle study with a convenience sample. Setting Neurologic rehabilitation hospital. Participants Participants (N=11) in this pilot study included healthy (n=8) and severely motor impaired (n=3) persons. The 3 people with severe motor disability were identified as potential candidates to benefit from the proposed hybrid BCI system for communication and environmental interaction. Interventions To eventually investigate the improvement in usability, we compared 2 modalities of BCI system control: a P300-based and a hybrid P300 electromyographic-based mode of control. Main Outcome Measures System usability was evaluated according to the following outcome measures within 3 domains: (1) effectiveness (overall system accuracy and P300-based BCI accuracy); (2) efficiency (throughput time and users' workload); and (3) satisfaction (users' satisfaction). We also considered the information transfer rate and time for selection. Results Findings obtained in healthy participants were in favor of a higher usability of the hybrid control as compared with the nonhybrid. A similar trend was indicated by the observational results gathered from each of the 3 potential end-users. Conclusions The proposed hybrid BCI control modality could provide end-users with severe motor disability with an option to exploit some residual muscular activity, which could not be fully reliable for properly controlling an assistive technology device. The findings reported in this pilot study encourage the implementation of a clinical trial involving a large cohort of end-users.

Original languageEnglish
Pages (from-to)S54-S61
JournalArchives of Physical Medicine and Rehabilitation
Volume96
Issue number3
DOIs
Publication statusPublished - Mar 1 2015

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Brain-Computer Interfaces
Self-Help Devices
Hybrid Computers
Computer Systems
Outcome Assessment (Health Care)
Workload
Healthy Volunteers
Software
Communication
Clinical Trials

Keywords

  • ALS (amyotrophic lateral sclerosis)
  • Assistive technology
  • Brain injuries
  • Brain-computer interfaces
  • Event-related potentials
  • P300
  • Rehabilitation

ASJC Scopus subject areas

  • Rehabilitation
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Medicine(all)

Cite this

Hybrid P300-based brain-computer interface to improve usability for people with severe motor disability : Electromyographic signals for error correction during a spelling task. / Riccio, Angela; Holz, Elisa Mira; Aricò, Pietro; Leotta, Francesco; Aloise, Fabio; Desideri, Lorenzo; Rimondini, Matteo; Kübler, Andrea; Mattia, Donatella; Cincotti, Febo.

In: Archives of Physical Medicine and Rehabilitation, Vol. 96, No. 3, 01.03.2015, p. S54-S61.

Research output: Contribution to journalArticle

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