Detecting anal contractions during spanking

I wondered if any doms were concerned with anal contractions during spanking - which could be seen ass a lack of acceptance, of resistance?

Is there a device to detect contractions?

Or, perhaps the anal contractions indicate that the spanking is having its desired result in enhancing her anal arousal. Sometimes the response of a throbbing outer portal is a part of the goal.

Is there a device to detect contractions?

Yep—that's called a finger. Get a finger of one hand in, and spank with the other hand. If the sub isn't supposed to be contracting their anus, take the appropriate measures.

I've heard of this before and its quite a curious idea. I've only ever experienced the "Don't you dare move even half an inch out of position and keep your bottom stuck out" form of submission.

I imagine for some people it would be very hard to control. Perhaps you can train yourself to not clench. Evidently that is what figging is for.

There is one, anorectal manometry. One study used a variant to determine a physiological indicator for orgasm (looking at the period between anal contractions) and found it. You might be able to use it here, but it would be possibly expensive. Finger could work, or just visual checking - see if the anus clenches and pulls up.

Squeezing anal sphincter during spanking is caused by tensing buttocks. So it is not that submissive consciously tenses the sphincter but rather tenses. clenches buttocks.

Figging is supposed to prevent this.

It is only natural for the buttock and anal muscles to contract when being hit which is when the body registers the impact and pain. Figging or use of fresh peeled ginger root does not prevent the clenching, but is an added sensation to the anus. Clenching makes it feel really warm but not unbearable and adds another dimension to the punishment/funishment and prolongs it as you watch them process it all.

Well here is an idea. A small laser pointer inserted into the sphincter. Beam directed at a wall, perhaps onto a grid. See how much the laser moves on the grid during spanking.

May also be used to detect intensity of spasms during orgasm.

Or any aggressive activity.

Laser pointer sales will now increase!!

@thedocisin As novel as the idea is, it seems pointless with no pun intended. If I am spanking someone or even caning, I am not really concerned about contractions other than something might be going wrong. Someone who cares about what they are doing and doing to the person, there are more important things to worry about.

@Master_Dorson who said I was worried?

I’m simply providing solutions to the question asked 😊

@Master_Dorson Yes, one of reactions to being hit is tensing the muscle that was hit. It might seem involuntary, but it can be controlled, at least to some degree.

However, many spankees do clench their buttocks before hits, and figging is believed to help with addressing this behaviour.