2013 Neural Communication

Conduction velocity

Critical fact icon Nerve fibres can be divided into several subcategories based on their conduction velocity (which is determined by their diameter and degree of myelination). Differences in conduction velocity explain the response to local anaesthetics.
Conduction velocity
Type
Axon Diameter
(microns)
Conduction Velocity
(m/s)
Location
Myelinated Fibres
18.5
42
motor neurons
14
25
sensory neurons
11
17
sensory neurons
B
3
4.2
autonomic nervous system
Unmyelinated fibres
C
2.5
0.3-0.4
sensory neurons

 

Email: Dr. Janet Fitzakerley | ©2013 University of Minnesota Medical School Duluth | Last modified: 15-nov-13 2:42 PM