Development of a multimodal biofeedback system for balance training

Biofeedback based exercises results in post-training improvements of postural stability. Various modalities have been used to provide a biofeedback system for training of balance control and postural stability. However a multimodal biofeedback system can offer more individualized training methods and hence provide therapists with a comprehensive solution for diverse patients. Individually, visual and haptic biofeedback has been identified as effective to reduce body sway in patients suffering from balance. So we have developed a novel multimodal system which provides biofeedback with both visual and haptic modality. Our system features a waist-attached smartphone, software running on a computer, a dedicated monitor for visual biofeedback and a dedicated Phantom Omni® device for haptic biofeedback. Experimental trials conducted with young healthy subjects demonstrate the effectiveness of the biofeedback system. The results indicate that a multimodal biofeedback system is found to be more effective in comparison with lone biofeedback of visual or haptic modality.