Today I had some fun with visuospatial manipulations, just to try them out. Nothing formal or esoteric, just imagining that I could move, bend, and stretch objects around me, and testing the limits of the complexity my brain can handle. It’s a lot of fun.
Anyway, the observation is that when I’m doing a particularly taxing manipulation, I often twitch on the right side of my body. Usually my right arm or right leg. While right hemisphere/left hemisphere dichotomies tend to be overblown, there is a small amount of truth to them with respect to specialized tasks. The common wisdom would have us believe visuospatial manipulation is a right-brain activity, but that would predict twitching on the left side.
Could always be coincidence, too.
This entire line of theory is based on “associative” neural activation, which is the idea that when neurons fire they cause nearby neurons to fire whether it’s appropriate or not (dendrites aren’t picky). So activity near motor-related corticles could cause involuntary twitching.
If the manipulation includes a verbal element (like moving letters around), I don’t twitch on either side. It could be that I haven’t tried anything difficult enough yet.