I don't have actual experience, but I'm pretty sure as long as you can compartmentalize thoughts sufficiently, you'll probably pass the poly easy. Hear the question, don't listen to it, don't break it down, don't analyze it, and keep your mind away from your answer and why you're saying what you're about to say, and just say it. I feel the danger lies with if you start to slip up with the compartmentalizing technique and you accidently "think" on the question and/or answer even for a fraction of a second - my guess is, these are what cause those little needles to register spikes.
I tried to make it very clear, I have no actual experience, this is all just a guess.