Which statement best differentiates bottom-up from top-down processing?

• A. Bottom-up uses sensory input to build perception from details; top-down uses expectations and prior knowledge to interpret sensory input.
• B. Bottom-up processing relies on prior knowledge; top-down relies on sensory input.
• C. Bottom-up processes only vision; top-down processes only audition.
• D. Bottom-up is faster; top-down is slower.

Answer: (A)