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Myers 7th Edition - Chapter 05 Vocabulary

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TERM
DEFINITION
Sensation   show
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Perception   show
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Bottom-up processing   show
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show Information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations.  
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show The study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.  
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Absolute threshold   show
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Signal detection theory   show
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show Below one's absolute threshold for conscious awareness.  
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show The minimum difference between two stimuli required for detection 50 percent of the time. We experience the difference threshold as a just noticeable difference. (Also called just noticeable difference or jnd.)  
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Weber's law   show
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Sensory adaptation   show
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show Conversion of one form of energy into another. In sensation, the transforming of stimulus energies into neural impulses.  
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Wavelength   show
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Hue   show
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show The amount of energy in a light or sound wave, which we perceive as brightness or loudness, as determined by the wave's amplitude.  
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Pupil   show
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Iris   show
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Lens   show
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Accommodation   show
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show The light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information.  
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show The sharpness of vision.  
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show A condition in which nearby objects are seen more clearly than distant objects because distant objects focus in front of the retina.  
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show A condition in which faraway objects are seen more clearly than near objects because the image of near objects is focused behind the retina.  
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Rods   show
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Cones   show
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Optic nerve   show
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show The point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there.  
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show The central focal point in the retina, around which the eye's cones cluster.  
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show Nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle, or movement.  
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show The processing of several aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision. Contrasts with the step-by-step (serial) processing of most computers and of conscious problem solving.  
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show The theory that the retina contains three different color receptors - one most sensitive to red, one to green, one to blue - which when stimulated in combination can produce the perception of any color.  
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show The theory that opposing retinal processes (red-green, yellow-blue, white-black) enable color vision. For example, some cells are stimulated by green and inhibited by red, others are stimulated by red and inhibited by green.  
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show Percieving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.  
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show The sense of hearing.  
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show The number of complete wavelengths that pass a point in a given time (for example, per second).  
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Pitch   show
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show The chamber between the eardrum and cochlea containing three tiny bones (Hammer, Anvil, and Stirrup) that concentrate the vibrations of the eardrum on the cochlea's oval window.  
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Inner ear   show
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Cochlea [KOHK-lee-uh]   show
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Place theory   show
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Frequency theory   show
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show Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea.  
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show Hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves; also called nerve deafness.  
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Gate-control theory   show
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show The principle that one sense may influence another, as when the smell of food influences its taste.  
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Kinesthesis [kin-ehs-THEE-sehs]   show
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Vestibular sense   show
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