My spinal surgeon who implanted my Boston Scientific device told me that it would help alleviate pain but not the numbness/tingling sensations. I also had the trial and it seemed to help significantly with my Morton's neuroma pain allowing me to walk in shoes on a hard surface. When I had the permanent unit implanted, it did not perform the same and has been a disappointment after trying many different programs, I was warned about the Nerve device which is why I went with the Boston Scientific device.