Unmyelinated

The researchers found that the fibres, called unmyelinated low-threshold mechanoreceptors

These unmyelinated, specialized nerve fibers, called C-tactile fibers, each cover about one square centimeter of skin. ❋ Unknown (2009)

In humans, some nerves remain unmyelinated, and those holdovers from early evolutionary time can't be anesthetised. ❋ Unknown (2007)

Those sensations are coming via unmyelinated nerves, and give you some idea of the level of sensation in an embryo. ❋ Unknown (2007)

In relatively primitive organisms like clams, all nerves are unmyelinated. ❋ Unknown (2007)

But there is a second slow-conducting nerve network of unmyelinated fibres, called C-tactile (CT), the role of which was unknown. ❋ Unknown (2002)

These constricted unmyelinated regions are called nodes of Ran-vier (rahn-vee-ay), after the French histologist Louis Antoine ❋ Asimov, Isaac (1963)

"In my present view, the leading hypothesis for the observed rapid changes...is that previously unmyelinated axonal fibers within white matter become rapidly myelinated when they start to carry frequent action potentials," he says. ❋ The Huffington Post News Editors (2011)

It also requires much less sodium than the unmyelinated axons do because it does not employ the use of a sodium-potassium pump. ❋ Ashcraft (2010)

When unmyelinated axons are checked for laminin, only nascent laminin is found in situ. ❋ Ashcraft (2010)

The two subcategories of CMH classes of C-nociceptive afferents exhibit similar conduction velocity (~0. 8 m/s) and radiant heat threshold (~45 °C) [28]; both were therefore likely to be involved in the triggering of the psychophysical responses to unmyelinated C-fibers reported in the present work. ❋ Léon Plaghki Et Al. (2010)

Although we did not make a formal determination of the conduction velocity of the fibers that triggered the sensation of warmth, the psychophysical latencies of the warm responses were found to be compatible with unmyelinated C-fibers at the faster end of their range (~2 m/s). ❋ Léon Plaghki Et Al. (2010)

In summary, the factors favoring the triggering of pain by either unmyelinated C-fibers or myelinated Aδ-fibers include the low/high rate of stimulation, the low/high base temperature of the skin and the short/long peripheral path. ❋ Léon Plaghki Et Al. (2010)