Intention Detection of Gait Adaptation in Natural Settings

Gait adaptation is an important part of gait analysis and its neuronal origin and dynamics has been studied extensively. In neurorehabilitation, it is important because it enables neuroplasticity mechanisms and facilitates the restoration of motor function. For this reason, brain-computer interfaces (BCI) have been build to facilitate neurorehabilitation. This paper presents a gait adaptation scheme in natural settings. It allows monitoring of subjects in more realistic environment without the requirement of specialized equipment such as treadmill and foot pressure sensors. We extract gait characteristics based on a single RGB camera whereas wireless EEG signals are monitored simultaneously. Based on Regularised Common Spatial Patterns (RCSP) that take into consideration both amplitude and frequency EEG features, we demonstrate that the method can not only successfully detect adaptation steps but it also detect efficiently whether the subject adjust their pace to higher or lower speed.