scholarly journals Position-selective activation of peripheral nerve fibers with a cuff electrode

1996 ◽  
Vol 43 (8) ◽  
pp. 851-856 ◽  
Author(s):  
E.V. Goodall ◽  
J.F. de Breij ◽  
J. Holsheimer
Keyword(s):  
Peripheral Nerve ◽  
Nerve Fibers ◽  
Selective Activation ◽  
Cuff Electrode

scholarly journals Malignant Peripheral Nerve Sheath Tumor in the Nasal Cavity of a Neonate: A Case Report

2021 ◽  
pp. 014556132110141
Author(s):  
Xiufang Chi ◽  
Yue Wang ◽  
Haoming Yang ◽  
Cheng Xing ◽  
Jiamin Gan ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Peripheral Nerve ◽  
Nasal Cavity ◽  
Nerve Fibers ◽  
Nerve Sheath Tumor ◽  
Rare Tumor ◽  
Nasal Mass ◽  
Peripheral Nerve Sheath Tumor ◽  
Related Literature ◽  
Nerve Sheath

Malignant peripheral nerve sheath tumor (MPNST) is a rare tumor that can develop on the lining of nerves and within the network of nerve fibers in different organs, and it is commonly found in the head and neck, limbs, and trunk. These tumors can occur in patients of any age. They most commonly occur in adults aged 20 to 50 years; however, fewer cases of this tumor in children have been reported. To date, no neonatal case of MPNST in the nasal cavity has been reported. Here, we report the case of a 4-day-old female newborn who presented with a nasal mass that re-enlarged after surgery and was diagnosed as MPNST of the nasal cavity on the basis of pathological results. This is the first report of MPNST in the nasal cavity of a neonate. Differential diagnosis and treatment of nasal masses have been proposed in the related literature.

Polymeric C-shaped cuff electrode for recording of peripheral nerve signal

2015 ◽  
Vol 210 ◽  
pp. 640-648 ◽  
Author(s):  
Ning Xue ◽  
Tao Sun ◽  
Wei Mong Tsang ◽  
Ignacio Delgado-Martinez ◽  
Sang-Hoon Lee ◽  
...  
Keyword(s):  
Peripheral Nerve ◽  
Nerve Signal ◽  
Cuff Electrode

scholarly journals Fast-spiking GABA circuit dynamics in the auditory cortex predict recovery of sensory processing following peripheral nerve damage

eLife ◽  
2017 ◽  
Vol 6 ◽  
Author(s):  
Jennifer Resnik ◽  
Daniel B Polley
Keyword(s):  
Peripheral Nerve ◽  
Auditory Cortex ◽  
Sensory Processing ◽  
Cortical Neurons ◽  
Sensory Nerve ◽  
Intracortical Inhibition ◽  
Nerve Fibers ◽  
Nerve Damage ◽  
Inhibitory Neurons ◽  
Sound Processing

Cortical neurons remap their receptive fields and rescale sensitivity to spared peripheral inputs following sensory nerve damage. To address how these plasticity processes are coordinated over the course of functional recovery, we tracked receptive field reorganization, spontaneous activity, and response gain from individual principal neurons in the adult mouse auditory cortex over a 50-day period surrounding either moderate or massive auditory nerve damage. We related the day-by-day recovery of sound processing to dynamic changes in the strength of intracortical inhibition from parvalbumin-expressing (PV) inhibitory neurons. Whereas the status of brainstem-evoked potentials did not predict the recovery of sensory responses to surviving nerve fibers, homeostatic adjustments in PV-mediated inhibition during the first days following injury could predict the eventual recovery of cortical sound processing weeks later. These findings underscore the potential importance of self-regulated inhibitory dynamics for the restoration of sensory processing in excitatory neurons following peripheral nerve injuries.

scholarly journals Muscle graft as a substitute for peripheral nerve graft in rats

2009 ◽  
Vol 24 (3) ◽  
pp. 221-225 ◽  
Author(s):  
Aristides Palhares ◽  
Fausto Viterbo ◽  
Ricardo Galesso Cardoso
Keyword(s):  
Peripheral Nerve ◽  
Nerve Injury ◽  
Nerve Fibers ◽  
Nerve Graft ◽  
Muscle Graft ◽  
Nerve Grafts ◽  
Peripheral Nerve Graft ◽  
Histological Appearance ◽  
Almost All

PURPOSE: To evaluate the applicability of the use of autogenous muscle treated in various ways, as a substitute of the nerve grafts. METHODS: Rats were divided into seven groups that received, as a treatment for a standard nerve injury, the following types of grafts: fresh muscle, muscle fixed with 10% formaldehyde, muscle frozen in a freezer, muscle frozen in refrigerator, nerveless muscle, peripheral nerve and a group was without any treatment. It assessed the histological appearance of the nerve fibers in the segment repaired. RESULTS: The evaluation of the segment nervous repaired showed nerve fibers through the graft in almost all groups, but the methodology employed has not adequately characterized the differences between the groups. CONCLUSION: This study showed the migration of nerves fibers through all grafts used.

scholarly journals 4.7-T diffusion tensor imaging of acute traumatic peripheral nerve injury

2015 ◽  
Vol 39 (3) ◽  
pp. E9 ◽  
Author(s):  
Richard B. Boyer ◽  
Nathaniel D. Kelm ◽  
D. Colton Riley ◽  
Kevin W. Sexton ◽  
Alonda C. Pollins ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
High Resolution ◽  
Peripheral Nerve ◽  
Nerve Injury ◽  
Peripheral Nerve Injury ◽  
Diffusion Tensor ◽  
Ex Vivo ◽  
Nerve Fibers ◽  
Nerve Transection ◽  
Nerve Injuries

Diagnosis and management of peripheral nerve injury is complicated by the inability to assess microstructural features of injured nerve fibers via clinical examination and electrophysiology. Diffusion tensor imaging (DTI) has been shown to accurately detect nerve injury and regeneration in crush models of peripheral nerve injury, but no prior studies have been conducted on nerve transection, a surgical emergency that can lead to permanent weakness or paralysis. Acute sciatic nerve injuries were performed microsurgically to produce multiple grades of nerve transection in rats that were harvested 1 hour after surgery. High-resolution diffusion tensor images from ex vivo sciatic nerves were obtained using diffusion-weighted spin-echo acquisitions at 4.7 T. Fractional anisotropy was significantly reduced at the injury sites of transected rats compared with sham rats. Additionally, minor eigenvalues and radial diffusivity were profoundly elevated at all injury sites and were negatively correlated to the degree of injury. Diffusion tensor tractography showed discontinuities at all injury sites and significantly reduced continuous tract counts. These findings demonstrate that high-resolution DTI is a promising tool for acute diagnosis and grading of traumatic peripheral nerve injuries.

Sign in / Sign up

Export Citation Format

Share Document