• sheath
  • The endoneuria with their enclosed nerve fibers are bundled into groups called nerve fascicles, each fascicle within its own protective sheath called a perineurium. (wikipedia.org)
  • In sufficiently large nerves multiple fascicles, each with its blood supply and fatty tissue, may be bundled within yet another sheath, the epineurium. (wikipedia.org)
  • axon
  • Quantitative sudomotor axon reflex testing (QSART) measures sweating response at local body sites to evaluate the small nerve fibers that innervate sweat glands. (wikipedia.org)
  • autonomic
  • Motor nerves (that control muscles), sensory nerves, or autonomic nerves (that control automatic functions such as heart rate, body temperature, and breathing) may be affected. (wikipedia.org)
  • The role of these nerves is to innervate the skin (somatic fibers) and help control autonomic function (autonomic fibers). (wikipedia.org)
  • Recently several studies have suggested an association between autonomic small fiber neuropathy and postural orthostatic tachycardia syndrome. (wikipedia.org)
  • 3 affected domains of neurological function: Cerebral hemisphere (15%) Cranial Nerves (35%) Spinal cord and roots (60%) Signs reported headache mental status change confusion cognitive impairment seizures hemiparesis gait instability Other symptoms that are less common are dementia, autonomic dysfunction, cranial nerve abnormalities, spinal symptoms such as limb weakness and paresthesia, and bowel and bladder dysfunction. (wikipedia.org)
  • medial
  • Saphenous, sural, common peroneal, tibial, lateral gastrocnemius, and medial gastrocnemius nerves had been dissected from both hip and legs and postfixed in 4% paraformaldehyde/2.5% glutaraldehyde in 0.1 JW-642 M PBS for 3 times (only saphenous and tibial nerves had been extracted from mice). (researchhunt.com)
  • Desk 1 Overview of Saphenous, Sural, and Common Peroneal Nerve Fibers Data for every Species1 Desk 2 Overview of Tibial, Medial Gastrocnemius, and Lateral Gastrocnemius Nerve Fibers Data for every Species1 A minimal C:A-fiber ratio may be the result of the paucity of C-fibers or an overabundance of A-fibers. (researchhunt.com)
  • neurons
  • Glial cells function to support neurons and in the PNS, also include satellite cells, olfactory ensheathing cells, enteric glia and glia that reside at sensory nerve endings, such as the Pacinian corpuscle. (wikipedia.org)
  • auditory nerve
  • citation needed] The inner hair cells transform the sound vibrations in the fluids of the cochlea into electrical signals that are then relayed via the auditory nerve to the auditory brainstem and to the auditory cortex. (wikipedia.org)
  • radial
  • Fourteen subjects (7 female, 7 male) were each given two to four control tests with cowhage on the dorsum of the hand within the anticipated autonomous zone of the superficial branch of the radial nerve (in the region of the interosseus muscle and extending to the base of the thumb and adjacent two fingers). (jneurosci.org)
  • A 2.5-cm-wide rubber band was draped over the wrist directly over the superficial branch of the radial nerve. (jneurosci.org)
  • Therefore, in a myelinated nerve fiber, a large number of molecular bonds are ordered around a radial axis of symmetry. (wikipedia.org)
  • cerebral
  • The total number of long range fibers within a cerebral hemisphere is 2% of the total number of cortico-cortical fibers (across cortical areas) and is roughly the same number as those that communicate between the two hemispheres in the brain's largest white tissue structure, the Corpus callosum. (wikipedia.org)
  • Aggregates of gray matter such as the basal ganglia (caudate nucleus, putamen, globus pallidus, substantia nigra, subthalamic nucleus, nucleus accumbens) and brainstem nuclei (red nucleus, cranial nerve nuclei) are spread within the cerebral white matter. (wikipedia.org)
  • humans
  • To investigate the role of small myelinated afferents in nonhistaminergic itch, we tested, in psychophysical studies in humans, the effect of a differential nerve block on itch produced by intradermal insertion of spicules from the pods of a cowhage plant ( Mucuna pruriens ). (jneurosci.org)
  • cranial
  • Malignant cells can migrate along spinal or cranial nerve epineurium-perineurium, invade the subpial space, and travel along blood vessels into the endoneurial space, or invade the nerve parenchyma. (wikipedia.org)
  • These cells have the ability to penetrate the pial membrane and invade the spinal cord and cranial nerves. (wikipedia.org)
  • Diplopia is the most common symptom of cranial nerve dysfunction. (wikipedia.org)
  • NM diffused infiltration of tumor cells into the subarachnoid space may be associated with increased intracranial pressure, signs of meningeal irritation, and damage to the cranial and spinal nerve roots. (wikipedia.org)
  • signals
  • CIPA is caused by a genetic mutation which prevents the formation of nerve cells which are responsible for transmitting signals of pain, heat, and cold to the brain. (wikipedia.org)
  • small
  • These fibers, categorized as C fibers and small Aδ fibers, are present in skin, peripheral nerves, and organs. (wikipedia.org)
  • Patients with Fabry disease have isolated small fiber engagement, and can have a more widespread small fiber disruption. (wikipedia.org)
  • There are many possible causes of small fiber neuropathy. (wikipedia.org)
  • A recent study revealed dysfunction of a particular sodium channel (Nav1.7) in a significant portion of the patient population with an idiopathic small fiber neuropathy. (wikipedia.org)
  • The diagnosis of small fiber neuropathy often requires ancillary testing. (wikipedia.org)
  • Specimens are sent to a specialized laboratory for processing and analysis where the small nerve fibers are quantified by a neuropathologist to obtain a diagnostic result. (wikipedia.org)
  • whereas
  • Nevertheless, the nude mole-rat didn't have got a higher amount of A-fibers weighed against its BSA especially, whereas the C-fiber count number was extremely low regarding BSA (Fig. 1G), recommending a C-fiber deficit instead of even more A-fibers underlies the reduced C:A-fiber ratio noticed. (researchhunt.com)
  • sensations
  • These findings demonstrate that activity in nociceptive, myelinated afferents contributes to cowhage-induced sensations, and that nonhistaminergic itch is mediated through activity in both unmyelinated and myelinated afferents. (jneurosci.org)
  • mice
  • The mice also had changes in the nerve cells that make and use dopamine, a key chemical in the brain that transmits messages from one nerve cell to another. (schizophrenia.com)
  • spinal
  • The repair of a traumatic spinal cord injury comes with great difficulties, because the nerve tissue cannot simply form anew. (wingsforlife.com)
  • This same situation also appear with spinal arteries where leakage of tumor cells is into the nerve roots. (wikipedia.org)
  • type
  • More than one type of nerve may be affected at the same time. (wikipedia.org)
  • Observations of long-term depression in parallel fiber inputs have provided support for theories of this type, but their validity remains controversial. (wikipedia.org)
  • density
  • His most recent work on the specific and non-specific binding of tetrodotoxin has provided new information about the density of sodium channels in various types of nerve. (wikipedia.org)
  • This skin punch biopsy measurement technique is called intraepidermal nerve fiber density (IENFD). (wikipedia.org)
  • induces
  • The basic concept of the Marr-Albus theory is that the climbing fiber serves as a "teaching signal", which induces a long-lasting change in the strength of parallel fiber inputs. (wikipedia.org)
  • nervous
  • During the development of the peripheral nervous system, the regulatory mechanisms of myelination are controlled via feedforward interaction of specific genes, influencing transcriptional cascades and shaping the morphology of the myelinated nerve fibers. (wikipedia.org)
  • known
  • The most common cause of mononeuropathy is physical compression of the nerve, known as compression neuropathy. (wikipedia.org)
  • damage
  • Polyneuropathy" is a pattern of nerve damage that is quite different from mononeuropathy, often more serious and affecting more areas of the body. (wikipedia.org)
  • different
  • With data out of this and prior research, we plotted BSA against saphenous nerve A-/C-fiber matters for different types and observed a confident relationship between A-/C-fiber amount and BSA. (researchhunt.com)