Burst stimulation: Current neurostimulation devices deliver a constant stimulation to relieve pain, but a frequent patient complaint is a tingling or numbing sensation that can be unpleasant. To combat this, recent studies are testing stimulation that is offered in bursts. A five-burst series is repeated around 40 times per second, with each burst lasting one thousandth of a second followed by one thousandth of a second with no simulation. Studies are finding that this burst method provides relief just as well, if not better, than constant stimulation. An additional advantage is that patients do not feel the tingling or numbing sensation.