Glial cells seem to aid in the migratory process (of neurons). They give rise to fibers that extend toward the brain’s surface. By climbing the glial trail, neurons find their homes. (See also Segregation.) (LeDoux, Joseph. Synaptic Self, How Our Brains Become Who We Are. p 69. NY: Penguin Books, 2002.)

Neurons are fed and guided by glial cells that form a path along which the neurons migrate. After the neurons reach their destination one type of glial cell controls metabolism, another coats the axons with myelin and controls speed of information conduction. (Ratey, John J., MD. A User’s Guide to the Brain. p 24. NY: Vintage Books, 2002.)

In the fetus, glial cells form the scaffolding that regulates the survival and differentiation of neurons. Glial cells allow the rest of the nervous system to develop. (Jessen, Kristjan R. Cells in Focus: Glial Cells. Int J Biochem Cell Biology. 36:1861-1867, 2004.)