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Dorsoventral photobiomodulation therapy safely reduces inflammation and sensorimotor deficits in a mouse model of multiple sclerosis.
J Neuroinflammation
December 2024
Aix Marseille Univ, CNRS, INT, Inst. Neurosci. Timone, Marseille, France.
Background: Non-invasive photobiomodulation therapy (PBMT), employing specific infrared light wavelengths to stimulate biological tissues, has recently gained attention for its application to treat neurological disorders. Here, we aimed to uncover the cellular targets of PBMT and assess its potential as a therapeutic intervention for multiple sclerosis (MS).
Methods: We applied daily dorsoventral PBMT in an experimental autoimmune encephalomyelitis (EAE) mouse model, which recapitulates key features of MS, and revealed a strong positive impact of PBMT on the sensorimotor deficits.
Center of mass states render multi-joint torques throughout standing balance recovery.
J Neurophysiol
December 2024
Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA.
Successful reactive balance control requires coordinated modulation of hip, knee, and ankle torques. Stabilizing joint torques arise from neurally-mediated feedforward tonic muscle activation that modulates muscle short-range stiffness, which provides an instantaneous "mechanical feedback" to the perturbation. In contrast, neural feedback pathways activate muscles in response to sensory input, generating joint torques after a delay.
View Article and Find Full Text PDFTransdiagnostic Network Localization of Social, Language, and Motor Symptoms in Patients With Frontotemporal Lobar Degeneration.
Neurology
December 2024
From the Department of Neurology, Vanderbilt University Medical Center, Nashville, TN.
Background And Objectives: Frontotemporal lobar degeneration (FTLD) includes different clinical syndromes with distinct patterns of symptoms and neuroanatomical locations of neurodegeneration. However, FTLD is clinically heterogeneous (with overlapping symptoms across several domains) and neuroanatomically heterogeneous (with brain atrophy in different locations in different patients). Traditional methods struggle to fully account for this heterogeneity.
View Article and Find Full Text PDFCo-contraction embodies uncertainty: An optimal feedforward strategy for robust motor control.
PLoS Comput Biol
November 2024
Unité de Mathématiques Appliquées, ENSTA Paris, Institut Polytechnique de Paris, Palaiseau, France.
Despite our environment often being uncertain, we generally manage to generate stable motor behaviors. While reactive control plays a major role in this achievement, proactive control is critical to cope with the substantial noise and delays that affect neuromusculoskeletal systems. In particular, muscle co-contraction is exploited to robustify feedforward motor commands against internal sensorimotor noise as was revealed by stochastic optimal open-loop control modeling.
View Article and Find Full Text PDFSjogren's Syndrome: A Series of Five Cases.
Cureus
October 2024
Neurology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Pune, IND.
Sjogren's syndrome is an autoimmune disorder that has a prominent involvement of exocrine glands. Systemic involvement of other organs can also happen. Peripheral nervous system involvement is common and may present as axonal sensory/sensorimotor or demyelinating polyneuropathy, mononeuritis multiplex, ganglionopathy, or cranial neuritis.
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