Journal: Science robotics
Article Title: Exoskeletons need to react faster than physiological responses to improve standing balance
doi: 10.1126/scirobotics.adf1080
Figure Lengend Snippet: (A) Depiction of a backward support surface translation with an artificially fast ExoBoot torque (red), a surface electromyography (EMG) electrode (orange), and a B-mode ultrasound probe (green). (B) (Top to bottom) Theoretical support surface displacement, corresponding processed soleus muscle activity, change in soleus fascicle length, change in biological ankle moment (grey), as well as the artificially fast (red) and physiologically delayed (blue) exoskeleton torque splines. Vertical dashed lines represent the onset of the indicated parameter(s).
Article Snippet: F s o l = M b i o r A T C S A s o l / p f cos θ p e n (2) Electromyography During each trial, we recorded surface electromyography (EMG) signals from the participant’s right soleus and tibialis anterior muscles (1000 Hz) (Motion Lab Systems, Inc., Baton Rouge, LA, USA).
Techniques: Activity Assay