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Learning Objective 1. Sensation: refers to the detection and basic sensory experience of environmental stimuli. (bottom-up) Perception: is the process of integrating, organizing, and interpreting sensations in meaningful ways. (top-down) 2. Transduction : Process by which a form of physical energy is converted into a coded neural signal that can be processed by the nervous system. 3. Absolute threshold : the minimum intensity of a stimulus that one can detect. Difference threshold : the minimum difference in intensity between two stimuli that one can detect. Weber’s law : Weber's Law is related to the Just Noticeable Difference (also known as the difference threshold), which is the minimum difference in stimulation that a person can detect 50 percent of the time. 4. Subliminal Perception: 1) Detection of stimuli that are below the threshold of conscious perception or awareness. 2) Does not profoundly influence behavior; brief effect. 3) Can influence behavior if the stimulus is relevant to personal goals The mere-exposure effect: is a psychological phenomenon by which people tend to develop a preference for things merely because they are familiar with them. In social psychology, this effect is sometimes called the familiarity principle.
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  • Summer '09
  • WOODRUFF,D
  • Chap3: Sensation & Perception, Electromagnetic spectrum, Photoreceptor cell, ganglion cells, optic nerve

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