B fiber
Encyclopedia
Group B fibers are nerve fibers which are moderately myelinated, which means less myelinated than group A fibers
and more myelinated than C fibers. Their conduction velocity is 3 to 14 m/s. They are generally visceral sensory fibers and preganglionic autonomic fibers.
A delta fiber
A delta fibers, or Aδ fibers, are a type of sensory fiber.They are associated with cold and pressure, and as nociceptors stimulation of them is interpreted as fast/first pain information....
and more myelinated than C fibers. Their conduction velocity is 3 to 14 m/s. They are generally visceral sensory fibers and preganglionic autonomic fibers.