chattering

Etymology

verb

1. present participle and gerund of chatter

adj

1. That chatters

noun

1. A noise that chatters.
   That speed mimics the natural electrical chatterings of the brain, said Dr. Karl Deisseroth, an assistant professor of bioengineering at Stanford. August 14, 2007, Ingfei Chen, “The Beam of Light That Flips a Switch That Turns on the Brain”, in New York Times
2. Output fluctuation before reaching a stable condition.