If You Get A Seizure Don't Blame Me

So this new video from Gnarls Barkley was banned by MTV because it didn't pass the Harding test which apparently is used to see if you are going to suffer a seizure when you watch it. My question is, who developed the Harding test, and who were the guinea pigs? I did feel a little ill after I watched the video, but I put that down to the fact that Justin Timberlake is in the video.