Cerebral Palsy maybe/maybe not

Thus in many cases of neurological impairment we see things being done in a very patterned way – cat-like? – not so well without a rich array of complex choices. Extra pyramidal is now taking over. Endless therapy to teach spinal what by brain would otherwise be easily taught. So, now we return to spasticity wherein the spindles unset are way too sensitive (“high gain”) to acceleration. With unexpected acceleration the unset spindles blast out signal floods. If you tap a muscle or even give it a passive quick stretch, not only does a muscle react, but other body parts jump or twist. “Cross reflexes” are movements elicited mechanically or by stimulation from afar. They cross our mental boundaries, down to up or this side of the body to the other side… whatever. A troubled right hip might be driven by a left irritable source, so beware of sidedness, it can fool you.

But now consider, we have seen that there is a second way to do things, via spindles and patterned response. Though crude it is, at least, available.