Maria I. Alekhina

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Objectives:(1) To evaluate the learning potential and performance improvements during standing balance training with visual feedback (VBT) in individuals with incomplete spinal cord injury (SCI) and (2) to determine whether standing static and dynamic stability during training-irrelevant tasks can be improved after the VBT.Setting:National Rehabilitation(More)
Evidence of a non-specific effect of balance training on postural control mechanisms suggests that balance training during mechanically unperturbed standing may improve postural corrective responses following external perturbations. The purpose of the present study was to examine kinematics of the trunk as well as muscular activity of the lower leg and(More)
1 Rehabilitation Engineering Laboratory, Toronto Rehabilitation Institute, Canada 2 Department of Exercise Sciences, Faculty of Physical Education and Health, Perceptual Motor Behaviour Laboratory, University of Toronto, Canada 3 Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada 4 Department of Rehabilitation for Movement(More)
A computerized comprehensive investigation of the oculomotor system was performed following dry immersion of 12 human subjects deprived of or provided with support afferentation stimulation. The purpose was to determine effects of weak proprioceptive, tactile and support afferentation on the eye pursuit parameters and significance of the support input for(More)
Comprehensive computerized oculomotor testing was used to investigate the vestibular function in 9 Russian members of ISS crews 3-9 on days 1 (2), 4 (5) and 8 (9) of return from long-term stay in microgravity (126 to 195 days). The vestibular function was assessed by the static otolith-cervical-ocular reflex, dynamic otolith-cervical-ocular reactions,(More)
Evaluation of the accuracy of eye turns (saccades) to fix a jerky pointed stimulus, and smooth pursuit of slow linear and sinusoidal movements of both pointed and optokinetic stimuli was performed in 31 cosmonauts on flight days 2-3, 5-8, 30, and once in one or two months of mission. An additional investigation of the eye pursuit function involved 10(More)
The new soft- and hardware is intended to specifically test the eye-tracking profession in order to diagnose and monitor the ocular and related sensory systems. Oculography is used to investigate different forms, including spontaneous and evoked, of visual tracking by computer stimulation of the sensory inputs. The system validation was a part of the pre-(More)
Previous studies have demonstrated that plantar cutaneous afferents can adjust motoneuron excitability, which may contribute significantly to the control of human posture and locomotion. However, the role of plantar cutaneous afferents in modulating the excitability of stretch and H-reflex with respect to the location of their excitation remains unclear. In(More)
BACKGROUND Robotic guidance has been shown to facilitate motor skill acquisition, through altered sensorimotor control, in neurologically impaired and healthy populations. OBJECTIVE To determine if robot-guided practice and online visual feedback availability primarily influences movement planning or online control mechanisms. METHODS In this(More)