ch. 5 sensation and perception – Flashcards

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The perceptual disorder in which a person has lost the ability to recognize familiar faces is
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prosopagnosia
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The process by which our sensory receptors and NS receive and represent stimulus energies from the environment and encode it as neural signals is__. The process by which sensations are organized and interpreted is__.
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sensation; perception
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Sensory analysis, which starts at the entry level and works up is called__. Perceptual analysis, which works from our experience and expectations is called__.
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bottom-up processing; top-down processing
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sensation is to what as perception is to
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detecting a stimulus; recognizing a stimulus
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superman's eyes used what while his brain used
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bottom up; top down
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concluding her presentation on sensation and perception, kelly notes that
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sensation and perception bend into one continuous process
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all our senses perform three basic steps; they what sensory info,___ that stimulation into neural impulses that our brain can use and____ that neural info to our brain
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receive; transform; deliver
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the process of converting one form of energy into another that your brain can use it called
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transduction
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the what refers to the minimum stimulation necessary for a stimulus to be detected what % of the time
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absolute threshold; 50
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stimuli you cannot detect 50% of the time are below threshold or what?
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subliminal
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under certain conditions, an invisible image or word can BLANK a person's response to a later question. The BLANK illustrates that much of our info processing occurs BLANK outside BLANK awareness. This is another illustration of our BLANK-BLANK mind.
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prime; priming effect; automatically; conscious; two track
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The minimum difference required to distinguish two stimuli 50% of the time is called__. Another term is called__.
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difference threshold; JND
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the principle that the diff. threshold is not a constant amount but a constant minimum proportion is___. The proportion depends on the__.
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`Weber's law, stimulus
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while you are outside with your friends, you see a dog that appears to be howling but you cant hear any sound coming from the dog. The dog's howling is below your
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absolute threshold; the minimum stimulation needed to detect a stimulus 50% of the time.
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In shopping for a new stereo, you discover that cannot differentiate between the sounds of models X and Y. The difference between X and Y is below your
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difference threshold
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Some marketers claim that we can BLANK sense subliminal stimuli, and that such stimuli have extraordinary BLANK powers.
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unconsciously; persuasive
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the effect of such stimuli is WHAT and has WHAT on behavior
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Fleeting; no enduring influence
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after constant exposure to an unchanging stimulus, the receptor cells of our senses begin to fire less vigorously, this phenomenon is called
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sensory adaptation
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this phenomenon illustrates that sensation is designed to focus on WHAT changes in the environment
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informative
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a mental predisposition to perceive one thing and not the other is called
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perceptual set
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how stimulus is perceived depends on our perceptual WHAT and the BLANK in which it is experienced.
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Set; context
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The context of a stimulus creates WHAT expectation that influences our perception as we match our WHAT signal against it
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top dwn; bottom up
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our perceptions are also influenced, top dwn, by our WHAT. For example, a water bottle seems closer if we are WHAT. _____ can similarly shove our WHAT in one direction or another.
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motivations; thirsty; emotions; social perceptions
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although carpenter smith perceived a briefly viewed object as a screwdriver, police perceived the same object as a knife. This illustrates that perception is guided by
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perceptual set
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the visible spectrum of light is small portion of the wide spectrum of WHAT energy
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electromagnetic
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the distance from one light wave peak to the next is called WHAT. This value determines the wave's color or BLANK. The amount of energy in light waves, or BLANK determined by a waves BLANK or height, influences the BLANK of a light.
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wavelength; hue; intensity; amplitude; brightness
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light enters the eye through the BLANK then passes thru small opening called the BLANK; the size of this opening is controlled by the colored BLANK.
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cornea; pupil; iris
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the curve thickness of the BLANK change in order to focus the image of an object onto the BLANK, the light sensitive inner surface of the eye
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lens; retina
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The retina's receptor cells are the BLANK and BLANK
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rods; cones
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The neural signals produced in the rods and cones activate the neighboring BLANK cells which activate a network of BLANK cells
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bipolar; ganglion
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the axons of ganglion cellls converge to form the BLANK, which carries the visual info to the BLANK, the brain region that distributes the info.
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optic nerve; thalamus
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Where this nerve leaves the eye, there are no receptor cells; thus, the area is called the
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blind spot
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most cones are clustered around the retina's area of BLANK, whereas the rods are concentrated in more BLANK regions of the retina. Many cones have their own BLANK cells to communicate with the visual cortex. Rods BLANK have direct links.
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central focus (fovea); peripheral; bipolar; do not
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it is the BLANK of the eye that permit the perception of color, whereas BLANK enable black and white vision
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cones; rods
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unlike cones, in dim light the rods are
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sensitive
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the retinas receptor cells begin processing sensory info by BLANK and BLANK it; the resulting impulses head toward specific locations in your BLANK, stopping on the way in your BLANK.
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coding;analyzing, visual cortex; thalamus
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Hubel and wiesal discovered that the neurons in these locations respond only to specific features of what is viewed. Because they respond only to particular BLANK and BLANK, they called these neurons. These neurons pass their info to other cortical areas , where teams of cells respond to complex patterns.
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edges; lines; angles; feature detectors
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the brain achieves its remarkable speed in visual perception by processing several subdivisions of a stimulus BLANK. this procedure, called BLANK, may explain why people who have suffered a stroke may lose just one aspect of vision.
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simultaneously; parallel processing
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to maximize your sensitivity to fine detail you should
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stare directly at the object
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comparing the human eye to a camera, the film would be located in the eye's what?
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retina
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what is true about cones
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cones enable vision cones are highly concentrated in the central region of the retina cones have a higher absolute threshold for brightness than rods
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assuming that the visual systems of humans and other mammals function similarly, you would expect that the retina of a nocturnal mammal would contain
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mostly rods
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as the football game continued into the night, Fabian notices that he was having difficulty distinguishing the colors of the players uniforms. this is because the BLANK, which enable color vision, have a BLANK absolute threshold for brightness than the available light intensity
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cones; higher
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an object appears to be in color because it BLNK the long wavelengths of red and because of our mental BLANK of the color
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reflects (rejects); construction
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one out of every 50% people is color blind; this usually a male because the defect is genetically
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sex linked
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According to the BLNK theory, the eye have three types of color receptors: one reacts most strongly to BLANK, one to BLANK and one to BLANK.
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Trichomatic; red' green' blue
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after staring at a green square for a while and then looking at a white sheet of paper, you will see the color red its BLANK color as an BKANK
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Opponent; after image
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hering's theory of color vision is called the BLANK theory. According to this theory, after visual info leaves the receptors it is analyzed in terms of pairs opposing colors; BLNK versus BLNK, BLNK vs. BLNK, and BLNK vs. BLNK.
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opponent process; red green; yellow blue; black white
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according to the BLANK school of psychology, we tend to organize a cluster of sensations into a BLANK, or form
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gestalt; whole
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when we view a scene, we see the central object, or BLANK, as a distinct from surrounding stimuli, or the BLANK.
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figure; ground
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proximity, continuity, and closure are examples of gestalt rules of
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grouping
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the principle that we organize stimuli into smooth continuous patters is called BLANK. the principle that we fill in gaps to create a complete, whole object is BLANK. the grouping of items that are close to each other is the principle of BLANK.
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continuity; closure; proximity
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studying the road map before her trip, meli has no trouble following the route of the highway she planned to travel. meli's ability shows the principle of
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continuity
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the ability to see objects in 3 dimensions despite their two dimensional representations on our retinas is calledBLANK. It helps us to predict BLANK.
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depth perception; distance
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gibson and walk developed the BLANK to test depth perception in infants. they found that each species, by the time it is BLANK, has the perceptual abilities it needs
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visual cliff; mobile
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any cue that requites both eyes
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binocular
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the greater the difference between the images received by the two eyes, the nearer the object: BLANK 3-D movies simulate this cue by photographing each scene with two cameras
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retinal disparity
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any cue that requires either eye alone:
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monocular
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if two objects are presumed to be the same size, the one that casts a smaller retinal image is perceived as farther away:
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relative size
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an object partially covered by another is seen as farther away:
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interposition
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objects lower in the visual field are seen as nearer
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relative height
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as we move, objects at different distances appear to move at different rates
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relative motion
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parallel lines appear to converge in the distance
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linear perspective
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the dimmer of two objects seems farther away:
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light and shadow
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when two familiar objects of equal size cast unequal retinal images, the object that casts the smaller retinal image will be perceived as being
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smaller than the other object
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as my friend cesar walks toward me, I perceive his size as remaining constant because his perceived distance BLANK at the same time that my retinal image of him BLANK
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decreases; increases
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how do I perceive a pole that partially covers a wall
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as nearer
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fabian paints a tree orchard so that the parallel rows of trees converge at the top of the canvas. Which cue did fabian use to convey distance?
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linear perspective
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objects higher in our field of vision are perceived as BLANK due to the principle of BLANK
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farther away; relative height
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our tendency to see objects as unchanging while the stimuli from them change in size, shape, and color is BLANK, process called
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top down; perceptual constancy
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the experience of color depends on the surrounding BLANK in which an object is seen. in an unvarying context, a familiar object will be perceived as having consistent color, even as the light changed. This phenomenon is called
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context;color constancy
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we see color as a result of our brains computations of the light BLANK by any object relative to its BLANK
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reflected; surrounding objects
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due to shape and size constancy, familiar objects BLANK appear to change or size despite changes in our BLANK images of them
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do not; retinal
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several illusions, including the BLANK illusion, are explained by the interplay between perceived BLANK and perceived BLANK. When distance cues are removed these illusions are BLANK.
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moon; size; distance; diminished
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in the absence of perceptual constancy
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objects would appear to change size as their distance from us changed
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my friend throws me a ball. I know that is is getting closer instead of larger because of
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size constancy
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the idea that knowledge comes from inborn ways of organizing sensory experiences was proposed by the german philosopher
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immanuel kant
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on the other side were philosophers who maintained that we learn to perceive the world by experiencing it. One british philosopher of this school was
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john locke
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studies of cases in which vison has been restored to a person who was blind from birth show that, upon seeing tactilely familiar objects for the first time, the person BLANK recognize them
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cannot
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studies of sensory restriction demonstrate that visual perceptual development. such as experiences suggest that there is a BLANK for normal sensory and perceptual development
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critical period
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humans given glasses that shift or invert the visual field BLANK adapt to distorted perception. This is called BLANK. animals such as baby chicks BLANK to distorting lenses.
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will; perceptual adaptation; do not adapt
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the basic taste sensations are BLANK, and a meaty taste called
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sweet, sour, salty, bitter an umami
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taste, which is a BLANK sense, is enabled by the 200 or more BLANK on the top and sides of the tongue. Each contains a BLANK with antenna- like hairs that detect info about molecules of food chemicals and carry it back to your BLANK
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chemical; taste buds; pore; taste; receptor cells
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taste receptors reproduce themselves every BLANK. as we age, the number of taste buds BLANK and our taste sensitivity BLANK. taste is also affected by BLANK and by BLANK use and by our BLANK
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week or two; decreases; decreases; smoking; alcohol; expectations
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like taste, smell, or BLANK is a BLANK sense. there BLANK a distinct receptor for each detectable odor
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olfaction; chemical; is not
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odors are able to evoke memories and feelings bcus there is a direct link between the brain area that gets info from the nose and the brain centers associated with memories and
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emotions
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70 ms gonzales finds that she must spice her food heavily or she cannot taste it. unfortunatleym, her son often finds her cooking inedible bcus it is so spicy, what is the likely explanation?
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being 70 ms gonzales has fewer taste buds than her son
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the absolute threshold varies depending on the stimulus (sight, sound, or touch)
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b
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if you can JND between 10 and pound weights, which of the following weights could you differentiate from a 100 pound weight?
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110 pound weight
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a decrease in sensory responsiveness accompanying an unchanging stimulus is called
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sensory adaptation
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the receptor of the eye that functions best in dum light is the
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rod
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frequency is to pitch as BLANK is to BLANK
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amplitude; loudness
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the transduction of light energy into nerve impulses takes place in the
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retina
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the brain breaks vision into separate dimensions such as movements, form, depth, and color, and works on each aspect simultaneously. this is called
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parallel processing
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one light may appear reddish and another greenish if they differ in
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wavelength
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why a rose appears equally red in a bright and dim light?
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color constancy
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ex of sensory adaptation
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finding the cold water of a pool warmer after you have been in it for a while
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most color deficient people will probably
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lack functioning red- or green sensitive cones
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the historical movement associated with statement " the whole may exceed the sum of its parts" is
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gestalt psychology
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figures tend to be perceived as a whole, complete objects, even if spaces or gaps exist in the representation, thus demonstrating the principle of
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closure
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the figure ground relationship
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the same stimulus can trigger more than one perception
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when we stare at an object, each eye receives a slightly different image providing a depth cue
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retinal disparity
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as we move, viewed objects cast changing shapes on our retinas, although we do not perceive the objects as changing. this is part of the phenomenon of
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perceptual constancy
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BLANK processing refers to how the physical characteristics of stimuli influence their interpretation
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bottom up
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which is not a monocular depth cue
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retinal disparity
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figure is to ground as BLANK is to BLANK
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cloud; sky
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the study of perception is primarily concerned with how we
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interpret sensory stimuli
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which influences perception
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biological maturation, the context in which stimuli are perceived, expectations
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which is not a basic taste
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bland
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bottom up processing begins with the
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sensory receptors
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process by which sensory info is converted neural energy us
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transduction
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opponent process theory
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neurons involves in color vision are stimulated by one color's wavelength and inhibited by another's
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weber's law
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the JND for any stimulus is a constant proportion
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the principle that one sense may influence another is
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sensory interaction
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wavelength is to BLANK as BLANK is to brightness
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hue; intensity
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concerning the evidence for subliminal stimulation
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the brain processes some info w/o our awareness, stimuli too weak to cross our thresholds for awareness may trigger a response in our sense receptors, an unnoticed image or word can briefly prime our response to a later question
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a subliminal stimulus is one that
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is too weak to cross either the difference threshold or the absolute threshold
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how we process color
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color processing occurs in two stages: a three color system in the retina and opponent process cells en route to the visual cortex
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the tendency to organize stimuli into smooth, uninterrupted patterns is called
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proximity
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gestalt theory of perception
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the mind organizes sensations into meaningful perceptions
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the phenomenon that refers to the ways in which an individuals expectations influence perception is
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perceptual set
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the depth cue that occurs when we watch stable objects at diff distances as we are moving is
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relative motion
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esp
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most research psychologists are skeptical of the claims of defenders of ESP
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gestalt means
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whole
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studies of the visual cliff have provided evidence that much of depth perception is
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innate
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laws of perceptual organizations are
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closure, continuity, proximity
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you perceive the diagram above as three sets of two lines to the principle of
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proximity
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retina
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contains rods and cones
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rods
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vision in dim light
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cones
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color vision
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Once we perceive an item as a figure, it is impossible to see it as a ground
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F
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laboratory experiments have laid to rest all criticisms of ESP
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F
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6 mos infants will cross visual cliff if their mother calls
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F
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unlike other animals, humans have no critical period for visual stimulation
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F
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immanuel kant argued that experience determined how we perceive the world
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F
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it is just as easy to touch two pencil tips together with only one eye open as it is with two eyes open
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F
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after some time, humans are able to adjust to living in a world made upside down by distorting goggles
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true
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as our distance from an object changes, the objects size seems to change
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f
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perception is influenced by psychological factors such as set and expectation as well as by physiological events
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true
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john locke argued that perception is inborn
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false
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cornea
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light enters the eye thru this transparent membrane, protects the inner structures from the environment
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iris
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colored part, functions like the aperture of a camera, controlling the size of the pupil to optimize the amount of light that enters the ye
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pupil
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the adjustable opening in the iris, the pupil slows light to enter
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lens
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this transparent structure behind the pupil changes shape to focus images on the retina
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retina
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the light sensitive inner surface of the eye, the retina contains the rods and cones, which transduce light energy into neural impulses
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blind spot
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the region of the retina where the optic nerve leaves the eye, the blind spot contains no rods or cones and so there is not vision here
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optic nerves
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this bundle of nerve fibers carries neural impulses from the retina to the brain
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