Probably communicate with one another and with neurons via chemical signals.
Oligodendrocytes form myelin sheaths that insulate nerve processes.
They form the insulating myelin sheath around axons. Myelination of neurons in a developing nervous system occurs when Schwann cells or oligodendrocytes grow around an axon so their plasma membranes form concentric layers. Provides electrical insulation since membranes are mostly lipid which is a poor current conductor. Insulating myelin sheath increases the speed of nerve impulse propagation. In multiple sclerosis, myelin sheaths deteriorate causing a disruption of nerve impulse transmission and consequent loss of coordination.