Table 1.

Pulse amplitude distributions used to generate the VTAs and their associated expected rotation angle.

Pulse amplitude distributions	1	2	3	4	5	6	7
Electrode 2	−34%	−50%	−60%	−70%	−80%	−90%	−100%
Electrode 3	−33%	−50%	−40%	−30%	−20%	−10%	0%
Electrode 4	−33%	0%	0%	0%	0%	0%	0%
Expecteda VTA angle rotation	-----	60°	48°	36°	24°	12°	0°

Pulse amplitude distribution 1 corresponds to a ring mode stimulation configuration, whereas pulse amplitude distribution 7 corresponds to a single electrode activation configuration. The remaining pulse amplitude distributions involve two electrodes and will be referred to as fractionalizations. Pulse amplitude distributions 1 and 2 can be performed by means of coactivation in a single source system.

^aBy linear proportion.