Some embodiments of the present invention provide stimulation systems and components for selective stimulation and/or neuromodulation of one or more nerve root ganglia through implantation of an electrode on, in or around a nerve root ganglia. Some other embodiments of the present invention provide methods for selective neurostimulation of one or more dorsal root ganglia as well as techniques for applying neurostimulation to the spinal cord. Still other embodiments of the present invention provide stimulation systems and components for selective stimulation and/or neuromodulation of one or more nerve root ganglia through implantation of an electrode on, in or around a nerve root ganglia in combination with a pharmacological agent.