The present disclosure provides neurostimulation methods and system for deep brain stimulation. A neurostimulation apparatus includes a plug configured to be mounted to a burr hole formed in a skull of a subject, a plurality of cable conductors configured to be coupled to the plug, and a lead configured to be coupled to the plurality of cable conductors, the lead comprising at least one electrode configured to apply stimulation to the subject, wherein the plug is configured to generate and supply electrical stimulation pulses to the lead through the plurality of cable conductors.