You See What?

Did you know that your visual system focuses on only one or very few objects at a time? Because far more information lands on your eyes than you can possibly analyze, your brain screens visual stimuli using bottom-up attentiveness or top-down attentiveness. Bottom-up (e.g., wildly waving hand) can get your attention because it sticks out. Top-down attentiveness occurs when you consciously direct your attention toward something specific (e.g., finding your suitcase on an airline baggage carousel).