Matching Pairs Sensation and PerceptionOnline version AP Psychology by Trevor Bentzley 1 Absolute Threshold 2 sensory adaptation 3 Bottom-Up Processing 4 Parallel Processing 5 perception 6 Weber's Law 7 sensation 8 transduction 9 Top-Down Processing the processing of several aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision. Contrast with the step-by-step (serial) processing of most computers and of conscious problem solving the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount) analysis that begins with the sense receptors and works up to the brain's integration of sensory information conversion of one form of energy into another. In sensation, the transforming of stimulus energies into neural impulses the minimum stimulation needed to detect a particular stimulus 50 percent of the time information processing guided by higher-level mental process, as when we construct perceptions drawing out our experience and expectation the process of organizing and interpreting sensory information; enabling us to recognize meaningful objects and events diminished sensitivity as a consequence of constant stimulation the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment