Glial cells perform many essential functions in the brain. Acting as “cleaner-up” cells, they are peptide factories that move around macrophage-like, sometimes destroying and sometimes nurturing nerve endings. (Pert, Candace, PhD. Molecules of Emotion. p 289. NY: Scribner, 1997.)
Glial cells cannot fire electrical impulses as do neurons, so do not have a wire-like axon for sending impulses over long distances or bushy dendrites for receiving them through thousands of synapses.
Memories are not bottled up inside neurons. They are stored in the connections between neurons linked by synapses. With new experiences, new connections are made between neurons and others are lost. In a sense, memores are not stores inside matter but in the spaces between them. (Fields, R. Douglas, PhD. The Other Brain. p 17. NY: Simon & Schuster, 2009.)