Eye-controlled, power wheelchair performs well for ALS patients

Area of Science:

• Rehabilitation Engineering
• Assistive Technology
• Neuroscience

Background:

• Amyotrophic lateral sclerosis (ALS) progressively impairs motor function, severely impacting patient mobility and independence.
• Developing advanced assistive technologies is crucial for maintaining quality of life in individuals with neurodegenerative diseases.
• Eye-tracking technology offers a potential non-invasive control interface for mobility devices.

Purpose of the Study:

• To evaluate the feasibility and performance of an eye-controlled power wheelchair prototype.
• To assess the user experience and satisfaction of amyotrophic lateral sclerosis (ALS) patients with the eye-controlled wheelchair.
• To determine the potential of this technology in improving independence for individuals with motor impairments.

Main Methods:

• A prospective pilot study involving twelve ALS patients.
• Participants navigated an indoor course using an eye-controlled power wheelchair, completing multiple trials.
• Performance metrics included course completion time, command response, turning maneuvers, backup, and obstacle negotiation, followed by a user experience questionnaire.

Main Results:

• All twelve participants successfully completed the three driving trials without difficulty.
• Eight participants executed all specific driving tasks (e.g., turns, stops) flawlessly.
• The system received high overall performance ratings, averaging 4.6 out of 5, indicating excellent user experience.

Conclusions:

• The developed eye-controlled power wheelchair prototype demonstrates high feasibility and a favorable user experience.
• This technology holds significant potential to enhance the mobility and independence of ALS patients.
• The system may also benefit other patient populations with significant motor impairments, broadening its applicability.