Abstract
It can be considered that the human operator in continuous tracking tasks has two fundamental control behaviors of a precognitive one and a predictive one. That is, he tracks in a precognitive mode for a simple input and in a predictive mode for a complex input. Then, what kinds of input signals can the human operator track in a precognitive mode?. And by what means may he shift from precognitive to predictive mode!. This paper considers these experimentally by using a single sine wave and 2 or 3 sine waves as input signals.
