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

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

Research output: Contribution to conferencePaperpeer-review

29 Citations (Scopus)


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.
Original languageEnglish
Number of pages4
Publication statusPublished - 2014
Eventthe 16th International Conference - Istanbul, Turkey
Duration: 12 Nov 201416 Nov 2014


Conferencethe 16th International Conference

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