Neurotron, Incorporated Innovative Medical Technology Established 1981 |
||
Fiber Spectra Distribution of a Typical Peripheral Sensory Nerve |
|
|||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||
Fiber Spectra Profile of a Typical Sensory Nerve
Peripheral nerves are composed of three distinct sub-populations of nerve fibers that are characterized by their diameter. The above figure above illustrates the number of fibers vs. diameter that comprise the typical sensory nerve. These various sub-populations of nerve fibers transmit different sensations. The smallest (unmyelinated) fibers transmit dull pain and temperature, the middle diameter (small myelinated) fibers transmit fast pain, temperature and pressure sensation, and the largest (myelinated) fibers transmit touch and pressure sensation. These three sub populations of nerve fibers work together to transmit normal sensation. For example, when one touches a glass, first the glass is felt (at (50 m/s) and only afterward the temperature (at 1 m/s). The right table below compares the neuroselectivity of the Neurometer CPT evaluation versus the Skin Punch Biopsy and the Nerve Conduction Velocity and the Somatosensory Evoked Potential evaluations. Additional diagnostic test comparisons are available at this link.
|
|
||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||
The entire contents of this web site are Copyright 1996-2010, Neurotron, Incorporated
Est. 1981, Baltimore, MD, USA. All rights reserved, worldwide
rev 2011-09-20 |