Neck Implant / nerve block. Anyone had any relief?

I may be raking up something that was already hit upon last year, but I just signed up to the New Scientist and came across this…

I guess it works in the same way as a nerve block in the back of the head/neck. It may be the same thing. Has anyone had this and found any relief?

(You have to subscribe to read so I’m copying and pasting)

Neck implant eases chronic migraine
14 October 2012
Magazine issue 2886. Subscribe and save
For similar stories, visit the The Human Brain Topic Guide
STIMULATING nerves in the neck with mild electrical pulses appears to offer relief to people with chronic migraine.

Stephen Silberstein of Thomas Jefferson University in Philadelphia, Pennsylvania, and his colleagues studied 157 people fitted with a device that periodically stimulates the occipital nerves that feed up the neck into the rear of the brain.

In 105 of the participants, the device was active for three months, while in the others it was switched off. The researchers found that the active device reduced the average number of migraines per month from 22 to 16 - twice the reduction seen when it was switched off (Cephalalgia, DOI: 10.1177/0333102412462642

“Presuming the therapy continues to be effective, I would expect the patients it benefits to retain the implant for life,” says Silberstein. The mechanism by which it works remains unknown, he says, but recent research in animals suggests that it reduces concentrations of a pain neurotransmitter in the nerves.

The device was approved a year ago in Europe, but is still awaiting approval in the US.