Sensation and Perception
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| Absolute Threshold | minimum amount of energy required for it to be reliably detected at least 50% of the time it is presented
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| Bottom-up Processing | occurs when we perceive individual bits of sensory information (e.g., sounds) and use them to construct a more complex perception
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| Difference Threshold | is the smallest difference between stimuli that can be reliably detected at least 50% of the time
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| Divided Attention | paying attention to more than one stimulus or task at the same time
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| Doctrine of Specific Nerve Energies | the different senses are separated in the brain, was first proposed in 1826
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| Inattentional Blindness | a failure to notice clearly visible events or objects because attention is directed elsewhere
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| Perception | involves attending to, organizing, and interpreting stimuli that we sense
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| Priming | subliminal stimuli under strict laboratory conditions
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| Psychophysics | the field of study that explores how physical energy such as light and sound and their intensity relate to psychological experience
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| Selective Attention | involves focusing on one particular event or task, such as focused studying
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| Sensation | detecting external events with sense organs and turning those stimuli into neural signals
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| Sensory Addaption | reduction of activity in sensory receptors with repeated exposure to a stimulus
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| Signal Detection Theory | whether a stimulus is perceived depends on both the sensory experience and the judgment made by the subject
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| Subliminal Perception | meaning perception below the threshold of conscious awareness
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| Top-down Processing | when our perceptions are influenced by our expectations or by our prior knowledge
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| Transduction | when specialized receptors transform the physical energy of the outside world into neural impulses
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| Weber's Law | states that the just noticeable difference between two stimuli changes as a proportion of those stimuli
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Created by:
craigsherrington