Serious Game-Based Training for Improved Control of a Temporalis Electromyography Interface for Controlling Powered...

Area of Science:

• Neuroscience
• Rehabilitation Engineering
• Human-Computer Interaction

Background:

• Amyotrophic lateral sclerosis (ALS) causes progressive mobility loss and reduced independence.
• Electromyography (EMG) interfaces for powered wheelchairs can restore autonomous movement.
• Serious games offer a training method for EMG-controlled wheelchair systems.

Purpose of the Study:

• To evaluate the generalizability of previous forearm EMG training game findings to a temporalis EMG system.
• To compare the effectiveness of different training modes (free play vs. structured) in a temporalis EMG context.
• To assess user experience and usability of the training games.

Main Methods:

• Participants completed a pretest using a structured EMG training game (ring challenge).
• Three training cohorts were established: a new game (Limbitless Journey), free play mode, and structured ring challenge.
• Post-training performance was assessed via the ring challenge, alongside usability surveys (GUESS, SUS).

Main Results:

• All training cohorts demonstrated user score improvements.
• The structured ring challenge cohort showed the most significant improvement (22.9 to 31.1 rings).
• No significant differences in user satisfaction (GUESS) or usability (SUS) were found between game versions.

Conclusions:

• Structured game-based training, specifically the 'ring challenge,' is effective for improving temporalis EMG control for wheelchair navigation.
• Both game versions provide acceptable and satisfying user experiences.
• EMG-controlled serious games show promise for enhancing mobility and independence in individuals with ALS.