In game theory, the Nash equilibrium is a solution concept of a non-cooperative game involving two or more players in which each player is assumed to know the equilibrium strategies of the other players, and no player has anything to gain by changing only his own strategy.[1] If each player has chosen a strategy and no player can benefit by changing ...
Myelinated nerve fibers occur predominantly in the cranial and spinal nerves and compose the white matter of the brain and spinal cord. It is the myelin sheath that gives the whitish color to the areas of white matter. Unmyelinated fibers are abundant in the autonomic nervous system.
Myelinated fibers form the bulk of the somatic nerves. Structurally, they are made up of following parts from within outwards. 1  Axis cylinder forms the central core of the fiber. 2  It consists of axoplasm covered by axolemma. 3  Myelin sheath, derived from Schwann cells, surrounds the axis cylinder. Neurolemmal sheath (sheath of Schwann) surrounds the myelin sheath. 2  It represents the plasma membrane (basal lamina) of the Schwann cell. 3  Beneath the membrane there lies a thin layer of cytoplasm with the nucleus of the Schwann cell.