An implantable stimulation lead for introduction into the brain or other anatomical target in a human body comprises a distal electrode terminal, a proximal connector terminal, and a connecting conductor cable. The led construction enables stylet means to bypass the cable and the connector terminal. A slotted cannula allows the cable and the connector terminal to be decoupled from the lead introduction tools. This enables a substantial stylet means and allows the cable and the connector terminal to be optimized without constraints of the lead introduction tools. The overall length of the lead is minimized and the conductor cable and the connector can be non-iso-diametric. A method of terminating conductors to electrodes using inserts is suitable for very fine wires and stranded conductors. The disclosed leads and accessories are applicable to stimulation leads, sensing leads, or any other lead that may be implanted with or without a stereotactic localization system.
