Modulation of afferent inflow during the control of balancing tasks using the lower limbs.

Brain Res

Graduate Department of Rehabilitation Science, Department of Physical Therapy, University of Toronto, 8th Floor, 500 University Ave., Toronto, Ontario, Canada M5G 1V7.

Published: January 2003

This study investigated the control of sensory inputs during the performance of an inverted-pendulum balancing task. Experiments were conducted to examine modulation of proprioceptive inputs during balance tasks of varying difficulty. It was hypothesized that proprioceptive inputs to both spinal and cortical levels would be facilitated during a challenged balance task. In contrast, during challenged balance control, results revealed task-specific facilitation of sensory inputs to the cortex and inhibition of the spinal reflex pathway. Observations of increased transmission of proprioceptive inputs to the cortex and decreased transmission at the spinal level suggest that the cortex plays an important role in challenged balance, whereas the role for the spinal stretch reflex appears to be less important.

Download full-text PDF

Source
http://dx.doi.org/10.1016/s0006-8993(02)03845-3DOI Listing

Publication Analysis

Top Keywords

proprioceptive inputs
12
challenged balance
12
sensory inputs
8
inputs cortex
8
inputs
5
modulation afferent
4
afferent inflow
4
inflow control
4
control balancing
4
balancing tasks
4

Similar Publications

The integration of different sensory streams is required to dynamically estimate how our head and body are oriented and moving relative to gravity. This process is essential to continuously maintain stable postural control, autonomic regulation, and self-motion perception. The nodulus/uvula (NU) in the posterior cerebellar vermis is known to integrate canal and otolith vestibular input to signal angular and linear head motion in relation to gravity.

View Article and Find Full Text PDF

Postural Responses in Trauma-Experienced Individuals.

Biomedicines

December 2024

Department of Health and Nursing Sciences, Faculty of Health and Sport Sciences, Széchenyi István University, Egyetem tér 1, 9026 Győr, Hungary.

Balance and proprioception are essential elements in postural control and injury prevention. Proprioception, the body's sense of position and movement, is closely tied to balance, which depends on input from the visual, vestibular, and somatosensory systems. This article explores the link between trauma experiences and proprioceptive dysfunction, emphasizing how heightened muscle tone, dissociation, and altered sensory processing contribute to balance issues and the risk of injury.

View Article and Find Full Text PDF

Neuronal ceroid lipofuscinosis type 2 (CLN2) is a rapidly progressive neurodegenerative disorder leading to premature mortality. Ambulatory CLN2 patients typically receive standard of care treatment through biweekly intracerebroventricular (ICV) enzyme replacement therapy (ERT) involving recombinant human tripeptidyl peptidase 1, known as cerliponase alfa (Brineura, Biomarin Pharmaceuticals). This study longitudinally assessed the impact of ICV cerliponase alfa ERT on gait, and postural control across a two-year span in two siblings diagnosed with atypical CLN2 disease.

View Article and Find Full Text PDF

Mechanical properties of the bicipital aponeurosis.

J Mech Behav Biomed Mater

December 2024

School of Engineering, University of Guelph, Guelph, Ontario, Canada. Electronic address:

As a biarticular muscle, the biceps brachii both supinates the forearm and flexes the elbow and shoulder, thus allowing the upper limb to perform a variety of activities of daily living (ADL). The biceps brachii originates on the coracoid apex as well as the supraglenoid tubercle and inserts on the radial tuberosity. At the distal end, the bicipital aponeurosis (BA) provides a transition of the biceps tendon into the antebrachial fascia.

View Article and Find Full Text PDF

Background: Although stroke patients gain an advantage in gait due to the knee hyperextension that occurs during the stance phase, this situation disrupts the biomechanical structure of the knee and increases the risk of injury to the capsular and ligamentous structures. The aim of this study was to examine the effects of rigid taping on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension during the stance phase of gait.

Research Question: Does rigid taping have an effect on hyperextension control and pelvic kinematics in stroke patients with knee hyperextension?

Methods: Thirty stroke patients aged between 40 and 70 were included in this pre-postintervention study.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!