Involuntary Spasm but no Orgasmic/Good Feelings

Yeah, I get those without the Aneros, when I lay down to go to sleep; that's about the only time I get the sensation to convulse.

rumel very kindly sent me this

Yes , IMHO, those involuntary spasms are a good sign the Aneros is making positive contact with your prostate and better yet that your prostate is responding with nerve impulses being sent out to the surrounding muscles. The rewiring process is partially about first discovering this stimulus-response pattern, then establishing a response-pleasure connection in your brain.

I think what you're experiencing is fine and is somewhat consistent with my own experience. In the beginning, my body did things that were not necessarily accompanied by pleasure. As time went on, the highly pleasurable feelings came. The analogy that comes to mind is cooking. If I make a big pot of chili, it'll pretty much taste like chili 15 minutes after I add all the ingredients. But, the more it simmers, the better it tastes. So, keep at it and I'll bet you'll start to get pleasuable sensations along with the spasms. And, whenthey start to feel good, they'll feel even better as time goes on.