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the process by which our sensory receptors and nervous system take in stimulus energies from our environment
the process by which our brain organizes and interprets sensory information, transforming it into meaningful objects and events
changing from one for of energy into another. transforming stimulus energies into neural impulses our brain can interpret
the minimum stimulation needed to detect a particular stimulus 50 percent of the time
activating, often unconsciously, associations in our mind, thus setting us up to perceive or remember objects or events in certain ways
the minimum difference between two stimuli required for detection 50 percent of the time. we experience this difference as a just noticeable difference
the principle that, to be perceived as different, two stimuli must differ by a constant minimum proportion
the amount of energy in a light wave or sound wave, which we perceive as brightness or loudness, as determined by the wave's amplitude
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