Communications of the ACM
First In-Home Test of Brain-Computer Communication by ALS Patients Offers Promise Amidst Challenges
Researchers at the National Institute of Biomedical Imaging and Bioengineering have demonstrated the reliability of an in-home brain-computer interface that gives patients with amyotrophic lateral sclerosis the ability to communicate.
Credit: Jonathan R. Wolpaw
Researchers at the National Institute of Biomedical Imaging and Bioengineering have demonstrated the reliability of an in-home brain-computer interface (BCI) that gives patients with amyotrophic lateral sclerosis a means to communicate by thought.
The BCI detects the electroencephalogram signal produced when a desired letter flashes and translates that to selection of the letter, enabling users to type messages on a screen.
The participants who mastered BCI use were monitored for up to 18 months, using the system an average of two days a week for about 90 minutes a day; users averaged three selections a minute.
The researchers say, "Patient and caregiver ratings indicated that BCI benefit exceeded burden."
The team also says, "BCIs that support communication are at present most suitable for people who are severely disabled but are otherwise in stable health."
From National Institutes of Health
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