Результаты поиска

Manual therapy in the treatment of ankle hemophilic arthropathy. A randomized pilot study.

PURPOSE: Although physiotherapy has demonstrated effectiveness in preventing ankle arthropathy compared to prophylaxis treatment from early … ntions were: (1) passive mobilization and stretching; and (2) manual orthopaedic therapy, both with proprioception training. The study lasted for six weeks, with two sessions a week. Ankle mobility and pain perception, lower limb proprioception and quality of life were the outcome measures. RESULTS: Both treatments improved all ankle movements (p < 0.05). The t …

EMG and EPP-integrated human-machine interface between the paralyzed and rehabilitation exoskeleton.

Although a lower extremity exoskeleton shows great prospect in the rehabilitation of the lower limb, it has not yet been widely applied to the clinical rehabilitation of the paralyzed. This is partly caused by insufficient information interactions between the paralyzed and existing exoskeleton that cannot meet the requirements of harmonious control. In this research, a bidirectional human-machine interface including a neurofuzzy controller and an extended physiological proprioception (EPP) feedback system is developed by imitating the biological closed-loop control system of human body. The ne…

Integration of learned artificial sensation with vision during freely moving navigation.

Humans rely on both proprioceptive and visual feedback during reaching, integrating these two sensory streams to improve movement accuracy and precision. Patients using a brain-computer interface will similarly require artificial proprioceptive feedback in addition to vision to finely control a prosthesis. Intracortical microstimulation (ICMS) elicits sensory perceptions that could replace the lost proprioceptive signal. However, some learning may be required for encoding artificial sensation, as current technology does not give access to neurons with all of the desired encoding properties. We

Sensorial function in children with congenital Zika syndrome: what is the relationship with motor function?

OBJECTIVE: To investigate sensory impairments in children with congenital Zika syndrome (CZS) and the relationship with motor function. METHODS: This is a cross-sectional, analytical study of medical records of children with CZS who were assisted by a support center for children with microcephaly in northeastern Brazil. General data about the children and their caregivers were recorded. Data from the Gross Motor Function Measure (GMFM-88) score and Gross Motor Function Classification System classification were recorded for motor function assessment, and the Sensory Profile 2 score was recorde

Intramuscular tendon length in agonist-antagonist myoneural interface components in transtibial amputation: An anatomic study.

Understanding the role of tendons in muscle function and proprioception is crucial for enhancing amputation surgery. Muscle spindles and Golgi tendon organs provide essential feedback for muscle control. Preservation of tendon function in amputation surgery and the development of the agonist-antagonist myoneural interface (AMI) have shown promising results restoring muscle-tendon proprioception and in improving prosthetic control. However, challenges remain in constructing AMI due to anatomical limitations in residual limbs. A total of 25 lower legs from fresh-frozen human Caucasian donors wer…

Impact of subclinical neck pain on eye and hand movements in goal-directed upper limb aiming movements.

Individuals with untreated, mild-to-moderate recurrent neck pain or stiffness (subclinical neck pain (SCNP)) have been shown to have impairments in upper limb proprioception, and altered cerebellar processing. It is probable that aiming trajectories will be impacted since individuals with SCNP cannot rely on accurate proprioceptive feedback or feedforward processing (body schema) for movement planning and execution, due to altered afferent input from the neck. SCNP participants may thus rely more on visual feedback, to accommodate for impaired cerebellar processing. This quasi-experimental stu…

Preventive interventions for lateral ankle sprains: A systematic review and meta-analysis.

OBJECTIVE: To evaluate the effect of preventive interventions for lateral ankle sprain in the general population. DATA SOURCES: A search of PubMed, EMBASE, Cochrane CENTRAL, Medline, CINAHL, and ClinicalTrials.gov was conducted up to August 2022. REVIEW METHODS: Randomized controlled trials and prospective cohort studies that evaluated any interventions for preventing lateral ankle sprain were included. Two reviewers independently conducted the search, screening, and data extraction. The methodological quality of each study was assessed using the revised Cochrane risk-of-bias tool for random

Functional Connectivity in Chronic Nonbothersome Tinnitus Following Acoustic Trauma: A Seed-Based Resting-State Functional Magnetic Resonance Imaging Study.

Background: Tinnitus and its mechanisms are an ongoing subject of interrogation in the neuroscientific community. Although most current mode … an homologue of the premotor ear-eye field bilaterally and the inferior parietal lobule involved in proprioception, in the tinnitus group. Conclusions: These new findings support the view that acoustic trauma tinnitus could bear a proprioceptive contribution and that a permanent cognitive control is required to filter out this chronic phantom percept.

A new approach to characterize postural deficits in chemotherapy-induced peripheral neuropathy and to analyze postural adaptions after an exercise intervention.

BACKGROUND: Postural instability presents a common and disabling consequence of chemotherapy-induced peripheral neuropathy (CIPN). However, knowledge about postural behavior of CIPN patients is sparse. With this pilot study, we used a new approach to i) characterize postural impairments as compared to healthy subjects, ii) allocate possible abnormalities to a set of parameters describing sensorimotor function, and iii) evaluate the effects of a balance-based exercise intervention. METHODS: We analyzed spontaneous and externally perturbed postural control in eight CIPN patients before and afte

Совпадение в полном тексте источника
… Generally, closing their eyes causes subjects to use vestibular and proprioceptive cues for controlling balance. As proprioceptive information are often deficient in neuropathy patients [ 26 ], it seems reasonable to assume that patients may prefer vestibular over proprioceptive cues. … Interestingly, the effect of up-weighting proprioception is the only significant model-based parameter modification after intervention. Why would CIPN patients profit from up-weighting proprioception while suffering from a supposed proprioceptive deficit? …

Passive eye movements induced by electromagnetic force (EMF) in rats.

Accurate information on eye position in the orbit is available from visual feedback, efference copy of the oculomotor commands and proprioceptive signals from the extraocular muscles (EOM). Whereas visual feedback and oculomotor commands have been extensively studied, central processing of EOM proprioceptive signals remains to be elucidated. A challenge to the field is to develop an approach to induce passive eye movements without physically contacting the eyes. A novel method was developed to generate passive eye movements in rats. A small rare-earth magnet disk (0.7 mm diameter, 0.5 mm thick

Static and dynamic body balance following provocation of the visual and vestibular systems in females with and without joint hypermobility syndrome.

OBJECTIVES: Joint hypermobility syndrome (JHS) is a heritable disorder of the connective tissue characterized by excessive joint movement, musculoskeletal pain and neurophysiological deficits (i.e. decreased proprioceptive acuity, altered neuromuscular reflexes). Such deficits may affect body balance thus increasing the risk of injury. The present study aimed at examining static and dynamic body balance following challenge of the visual and vestibular systems in individuals with JHS. METHODS: The sample consisted of 21 females with JHS and 20 controls without signs of JHS. Static body balance

Clinically silent dysfunction of dorsal columns and dorsal spinocerebellar tracts in hereditary spastic paraparesis.

Hereditary spastic paraparesis (HSP) is a neurodegenerative disorder, of which progressive spastic paraparesis is the clinical hallmark. Given the neuropathological evidence of degeneration of pyramidal tracts, dorsal columns, and dorsal spinocerebellar tracts, it is surprising that sensory symptoms are so indistinct compared to motor symptoms. We investigated the involvement of peripheral conduction and spinal proprioceptive pathways by nerve conduction studies, somatosensory evoked potentials of the median and tibial nerves, and quantitative assessment of the vibration perception thresholds

Bridging Conflicting Views on Eye Position Signals: A Neurocomputational Approach to Perisaccadic Perception: Eye Position Information in Brain and Model.

Saccades are an integral component of visual perception, yet the accuracy and role of eye position signals in the brain remain unclear. The classical model of perisaccadic perception posits that the dorsal visual system combines an imperfect eye position signal with visual input, leading to systematic perisaccadic mislocalizations under specific experimental conditions. However, neurophysiological studies of eye position information have produced seemingly conflicting results. One team of researchers observed the eye position signal directly in gain-field neurons in the lateral intraparietal a

The Contribution of Motor Commands to the Perturbations Induced by Sensorimotor Conflicts in Fibromyalgia.

Individuals with pain report higher sensory disturbances during sensorimotor conflicts compared to pain-free individuals. In the pain field, … lated to conflict-induced motor disturbances (r = 0.57; p < 0.01), but did not result from a poorer proprioception (r = 0.12; p = 0.61). Therefore, it appears that higher conflict sensitivity in fibromyalgia is mainly explained by a sensory-motor conflict rather by a sensory-sensory conflict. We suggest this arises due to a deficit in updating predicted sensory …

Dynamic neuromuscular stabilization exercises improve sensorimotor function and muscle performance in adolescents with hearing impairment: a randomized controlled trial.

Hearing impairment (HI) affects proprioception and motor control negatively; however, the impact of Dynamic Neuromuscular Stabilization (DNS) exercises on these parameters of sensorimotor function or motor performance in adolescents is largely unknown. The objective of this study was to determine the effect of a DNS exercise on sensorimotor function and muscle performance in male adolescents with HI. The sample included 22 male adolescents between 10 and 15 years old with HI greater than 70 dB, who were randomly assigned to an intervention (n = 11) and a control group (n = 11). Proprioception,…

Developing a Multi-Directional Lower-Limb Training System Toward Aging in Place Rehabilitation: A Preliminary Feasibility Study on Healthy Individuals.

Not only improving muscle strength but also improving muscle power and neuromuscular control are important factors in improving lower limb function. In this study, a multi-directional lower-limb training system for aging -in-place rehabilitation was developed. The training system offers four distinct modes: muscle power training, pivoting neuromuscular training, muscle strength training using eccentric contractions, and proprioception training with evaluation. The feasibility of the training system was assessed through experiments conducted on healthy adults. Parameters such as mean of electro…

Behavioral, Neural, and Computational Principles of Bodily Self-Consciousness.

Recent work in human cognitive neuroscience has linked self-consciousness to the processing of multisensory bodily signals (bodily self-cons … tisensory bodily stimuli within peripersonal space (PPS). We develop four major constraints of BSC (proprioception, body-related visual information, PPS, and embodiment) and argue that the fronto-parietal and temporo-parietal processing of trunk-centered multisensory signals in PPS is of particular relevance for theoretical models and simulations of BSC and even …

An examination of ankle joint position sense, postural control and associated neuromuscular deficits in patients with plantar fasciitis: a cross-sectional analysis with advanced biomechanical and psychosocial correlates.

BACKGROUND: Ankle joint position sense (AJPS) accuracy and postural control are crucial for maintaining balance and stability, particularly in individuals with plantar fasciitis who may experience proprioceptive and functional impairments. Understanding how psychosocial factors, such as pain catastrophizing, and biomechanical measures, like muscle strength and gait parameters related to proprioception and postural control, can inform more effective treatment approaches. This study aimed to (1) examine the relationship between AJPS accuracy and biomechanical factors-including postural stability…

Novel insights into the pathogenesis of thyroid eye disease through ferroptosis-related gene signature and immune infiltration analysis.

Chronic ankle instability (CAI) poses challenges in sports. Textured insoles are a promising intervention for optimizing ankle muscle activity and enhancing ankle proprioceptive ability in individuals with CAI. This study investigated the effects of different types of insoles on ankle muscle activity and ankle inversion proprioception during drop-landing tasks. Thirty-two soccer players (16 CAI, 16 non-CAI) participated in the study. Electromyographic (EMG) activity of the tibialis anterior (TA), medial gastrocnemius (MG), and peroneus longus (PL) muscles was recorded during drop-landing tasks…