A very little boy stood up and sheepishly recited, "You’d scarce expect one of my age to speak in public on the stage," etc.—accompanying himself with the painfully exact and spasmodic gestures which a machine might have used—supposing the machine to be a trifle out of order.
There are no more uses of "spasmodic" in the book.
Show samples from other sources
—I wonder if your eyes and ears ever make anything save spasmodic contact with your brain.
Harper Lee -- Go Set a Watchman
She sits and her cane flexes against the gravel and the boy clicks his buttons in spasmodic flurries.