How does top-down processing differ from bottom-up processing?

How does top-down processing differ from bottom-up processing?

Top-down processing uses a concept to screen incoming information, while bottom-up processing looks for a pattern in a pool of information.

Top-down processing uses sensory perceptions in problem solving, while bottom-up processing uses a structured goal to guide the process of perception.

Top-down processing arranges bits of information into a recognizable whole, while bottom-up processing screens data according to prior knowledge.

Top-down processing relies on primarily cognitive processes, while bottom-up processing operates on a mostly unconscious basis.