Role Distribution between Ankle Joint Stiffness and Stretch Reflex in Human Postural Control
نویسندگان
چکیده
منابع مشابه
Comparison of Stretch Reflex Torques in Ankle Dorsiflexors and Plantarflexors
This study compared the intrinsic and reflex torques generated in response to position perturbations in tibialis anterior (TA) and gastrocnemius (GS) ankle muscles. Pulse, step, and a combination of random perturbation and step inputs were used to identify the reflex and intrinsic contributions to the measured torque. TA reflex torques were very small whereas GS reflex torques were substantial.
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6 Department of Neurorehabilitation Engineering, Bernstein Focus Neurotechnology 7 Göttingen, Bernstein Center for Computational Neuroscience; University Medical Center 8 Göttingen, Georg-August University, 37075 Göttingen, Germany 9 Center for Sensory-Motor Interaction (SMI), Department of Health Science and 10 Technology, Aalborg University, 9220 Aalborg, Denmark 11 Koç University School of M...
متن کاملHuman stretch reflex pathways reexamined.
Reflex responses of tibialis anterior motor units to stretch stimuli were investigated in human subjects. Three types of stretch stimuli were applied (tap-like, ramp-and-hold, and half-sine stretch). Stimulus-induced responses in single motor units were analyzed using the classical technique, which involved building average surface electromyogram (SEMG) and peristimulus time histograms (PSTH) f...
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We address the estimation of biomechanical parameters with wearable measurement technologies. In particular, we focus on the estimation of sagittal plane ankle joint stiffness in dorsiflexion/plantar flexion. For this estimation, a novel nonlinear biomechanical model of the lower leg was formulated that is driven by electromyographic signals. The model incorporates a two-dimensional kinematic d...
متن کاملEstimation of Time-Varying, Intrinsic and Reflex Dynamic Joint Stiffness during Movement. Application to the Ankle Joint
Dynamic joint stiffness determines the relation between joint position and torque, and plays a vital role in the control of posture and movement. Dynamic joint stiffness can be quantified during quasi-stationary conditions using disturbance experiments, where small position perturbations are applied to the joint and the torque response is recorded. Dynamic joint stiffness is composed of intrins...
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ژورنال
عنوان ژورنال: Transactions of the Society of Instrument and Control Engineers
سال: 1999
ISSN: 0453-4654
DOI: 10.9746/sicetr1965.35.600