Medullary Stimulation for the Treatment of Refractory Neck Pain (S2M)

"The 12 patients will be implanted by the WAVEWRITER ALPHA ™ device. Then, the order of the three stimulation modes will be randomly selected and will be composed of 5 modalities:~* tonic stimulation LF: In tonic mode, the electrical stimulation of the sensory fibres of the posterior cords of the spinal cord induces local paresthesias~* high frequency stimulation (1000 Hz) High Frequency.~* stimulation in bursts (or Burst)"