Details

Autor(en) / Beteiligte

• Olugbade, Temitayo A.
• Aung, M.S. Hane
• Bianchi-Berthouze, Nadia
• Marquardt, Nicolai
• Williams, Amanda C.

Titel

Bi-Modal Detection of Painful Reaching for Chronic Pain Rehabilitation Systems

Ist Teil von

• Proceedings of the 16th International Conference on Multimodal Interaction, 2014, p.455-458

Ort / Verlag

New York, NY, USA: ACM

Erscheinungsjahr

2014

Quelle

ACM Digital Library

Beschreibungen/Notizen

• Physical activity is essential in chronic pain rehabilitation. However, anxiety due to pain or a perceived exacerbation of pain causes people to guard against beneficial exercise. Interactive rehabiliation technology sensitive to such behaviour could provide feedback to overcome such psychological barriers. To this end, we developed a Support Vector Machine framework with the feature level fusion of body motion and muscle activity descriptors to discriminate three levels of pain (none, low and high). All subjects underwent a forward reaching exercise which is typically feared among people with chronic back pain. The levels of pain were categorized from control subjects (no pain) and thresholded self reported levels from people with chronic pain. Salient features were identified using a backward feature selection process. Using feature sets from each modality separately led to high pain classification F1 scores of 0.63 and 0.69 for movement and muscle activity respectively. However using a combined bimodal feature set this increased to F1 = 0.8.