A picafina, or lead, includes a decoder within the picafina to provide directional stimulation to a multitude of electrode pads. The system of address wires, control switches and demultiplexers selects one of a plurality of the electrode pads. Time delay switches control the fixed length of the time the cells receive the electrical stimulation. Alternatively the fixed length of the time the cells receive the electrical stimulation may be implemented by periodically disconnecting the stimulation voltage as the battery output.
