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Assistive Device With Conventional, Alternative, and Brain-Computer Interface Inputs to Enhance Interaction With the Environment for People With Amyotrophic Lateral Sclerosis: A Feasibility and Usability Study.
- Source :
- Archives of Physical Medicine & Rehabilitation; Mar2015 Supplement, Vol. 96, pS46-S53, 8p
- Publication Year :
- 2015
-
Abstract
- Objective: To evaluate the feasibility and usability of an assistive technology (AT) prototype designed to be operated with conventional/alternative input channels and a P300-based brain-computer interface (BCI) in order to provide users who have different degrees of muscular impairment resulting from amyotrophic lateral sclerosis (ALS) with communication and environmental control applications. Design: Proof-of-principle study with a convenience sample. Setting: An apartment-like space designed to be fully accessible by people with motor disabilities for occupational therapy, placed in a neurologic rehabilitation hospital. Participants: End-users with ALS (N=8; 5 men, 3 women; mean age ± SD, 60±12y) recruited by a clinical team from an ALS center. Interventions: Three experimental conditions based on (1) a widely validated P300-based BCI alone; (2) the AT prototype operated by a conventional/alternative input device tailored to the specific end-user's residual motor abilities; and (3) the AT prototype accessed by a P300-based BCI. These 3 conditions were presented to all participants in 3 different sessions. Main Outcome Measures: System usability was evaluated in terms of effectiveness (accuracy), efficiency (written symbol rate, time for correct selection, workload), and end-user satisfaction (overall satisfaction) domains. A comparison of the data collected in the 3 conditions was performed. Results: Effectiveness and end-user satisfaction did not significantly differ among the 3 experimental conditions. Condition III was less efficient than condition II as expressed by the longer time for correct selection. Conclusions: A BCI can be used as an input channel to access an AT by persons with ALS, with no significant reduction of usability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00039993
- Volume :
- 96
- Database :
- Supplemental Index
- Journal :
- Archives of Physical Medicine & Rehabilitation
- Publication Type :
- Academic Journal
- Accession number :
- 102024861
- Full Text :
- https://doi.org/10.1016/j.apmr.2014.05.027