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Sensation and Perception Flashcards

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3790011223sensationthe subjective awareness of a stimulus; the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment0
3790011224perceptionthe process of organizing and interpreting sensory information; enabling us to recognize meaningful objects and events; helping us make sense of the world around us1
3790011226bottom-up processinganalysis begins withe the sensory receptors and works up to the brain's integration of sensory information2
3790011228top-down processinginformation processing guided by higher-level mental processes, as when we construct perceptions drawing on our experiences and expectations3
3790011232transductionconverting stimulus in the environment into neural signals4
3790011237selective attentionThe ability to focus on only one stimulus from among all sensory input5
3790011238inattentional blindnessfailure to see visible objects when our attention in directed elsewhere6
3790011239change blindnessFailing to notice changes in the environment/scenes, even when you appear to be attending to the information7
3790011240choice blindnessthe phenomenon of subjects not realizing that they had been given something that was not "their choice"8
3790021424Cocktail party effectthe ability to attend to only one voice among many9
3792616454absolute thresholdthe smallest possible strength of a stimulus that can be detected in half the time10
3792616455difference thresholdsmallest change in the intensity of a stimulus that can be detected (just noticeable difference)11
3792616456Signal Detection TheoryOur ability to notice a stimulus is varied due to psychological factors including motivation, past experience, and expectations.12
3792616457Weber's LawTo be perceived as different, two stimuli must differ by a constant minimum percentage. (Light-8%, Weight-2%, Tones-3%)13
3792616458subliminalexisting or operating below the threshold of consciousness14
3792628957Psychophysicsthe study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them15
3798870999Huethe dimension of visual experience specified by color names and related to wavelength of light16
3798876669Brightnessthe dimension of visual experience related to the amount (intensity) of light emitted from or reflected by an object17
3798881321Saturation(colorfulness) vividness or purity of color; When light contains only a single wavelength, it is said to be pure; the resulting color is said to be completely _____(ed).18
3798887775Corneaouter covering of the eye19
3798889977Pupilthe adjustable opening in the center of the eye through which light enters20
3798892721Irisa ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening21
3798896112Lensthe transparent structure behind the pupil that changes shape to help focus images on the retina22
3798901031Retinathe light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information23
3798904370Blind Spotthe point at which the optic nerve leaves the eye, creating a ___________ because no receptor cells are located there24
3798908919Foveathe central focal point in the retina, around which the eye's cones cluster25
3798910947Optic Nervethe nerve that carries neural impulses from the eye to the brain26
3798912951RodsVisual receptors that respond to dim light27
3798912952ConesVisual receptors involved in color vision28
3798914279ThalamusRelay center of the brain29
3798914280Visual CortexLocated in the occipital lobe, it is the part of the brain responsible for interpreting visual information30
3798916013Occipital LobePart of the cerebral cortex that contains the visual cortex. One of the four major lobes. Located in the back of your head31
3798945950Sensory AdaptationThe reduction or disappearance of sensory responsiveness when stimulation is unchanging or repetitious32
3798949562Sense ReceptorsSpecialized cells that convert physical energy in the environment or the the body to electrical energy that can be transmitted as nerve impulses to the brain33
3798959642synesthesiaA condition in which stimulation of one sense also evokes another34
3798989630Sensory deprivationthe absence of normal levels of sensory stimulation35
3798998282Ganglion CellsNeurons in the retina of the eye, which gather information from receptor cells; their axons make up the optic nerve36
3799004369Dark adaptationa process by which visual receptors become maximally sensitive to dim light37
3799008012Feature detectorsCells in the visual cortex that are sensitive to specific features of the environment38
3799013498Trichromatic Theorya theory of color perception that proposes three mechanisms in the visual system, each sensitive to a certain range of wavelengths; their interaction is assumed to produce all the different experiences of hue39
3799022993Opponent-process theorya theory of color perception that assumes that the visual system treats pairs of colors as opposing or antagonistic40
3799030185Gestalt principlesprinciples that describe the brain's organization of sensory information into meaningful unites and patterns41
3799035122Proximitya Gestalt principle that things that are near each other tend to be grouped together42
3799038994Closurea Gestalt principle that the brain tends to fill in gaps in order to perceive complex forms43
3799042204Similaritya Gestalt principle that things that are alike in some way tend to be perceived as belonging together44
3799048861Continuitya Gestalt principle that lines and patterns tend to be perceived as continuing in time or space45
3799056776binocular cuesvisual clues to depth or distance requiring two eyes46
3799058407convergencethe turning inward of the eyes, which occurs when they focus on a nearby object47
3799061165retinal disparitythe slight difference in lateral separation between tow objects as seen by the left eye and the right eye48
3799064401monocular cuesvisual cues to depth or distance, which can be used by one eye alone49
3799066806perceptual constancythe accurate perception of objects as stable or unchanged despite changes in the sensory patterns they produce50
3799074315Interpositiona monocular cue where an object that partly blocks another one must be in front of the other51
3799079454Motion parallaxa monocular cue where an observer is moving and objects appear to move at different speeds. the closer an object, the faster it moves52
3799085471Relative sizea monocular cue where the smaller an object is on the retina, the farther away the object appears53
3799089381Relative claritya monocular cue where because of particles in the air from dust, fog, or smog, distant objects tend to look hazier, dull, or less detailed54
3799094698Texture gradientsa monocular cue where distant parts of a uniform surface appear denser; that is its elements seem spaced more closely together55
3799099767Linear perspectivea monocular cue where parallel lines will appear to be converging in the distance; the greater the apparent convergence, the greater the perceived distance56
3845753637Pitchdetermined by the wavelength of sound; high frequency = high ______; low frequency = low ______.57
3845755643Wavelengththe distance from the peak of one wave to the peak of the next58
3845756480Intensity (of sound)Amount of energy in a wave; determined by the amplitude, relates to perceived loudness59
384575796685 DecibelsProlonged exposure to sound above _______ can lead to hearing loss60
3845758754Timbrethe characteristic quality of sound produced by a particular instrument or voice; tone61
3845760054Auditory Canala part of the outer ear, it funnels sound waves to the ear drum62
3845760641Eardruma tight membrane of the middle ear that vibrates when struck by sound waves63
3845762747Hammer, Anvil, and StirrupThree bones of the middle ear64
3845763236Oval Windowwhere the stirrup connects to the cochlea65
3845763492CochleaLocated in the inner ear; a coiled, bony, fluid-filled tube in the inner ear through which sound waves trigger nerve impulses66
3845764826Hair CellsLocated within the cochlea, the basilar membrane's ________ are the sensory receptors of both the auditory and vestibular system67
3845765093Auditory Nervenerve that is connected to the cochlea which sends the auditory message to the brain via the thalamus68
3852912840Place TheoryIn hearing, the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated69
3852913452Frequency TheoryIn hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling us to sense its pitch70
3852913829Volley PrincipleIn hearing, the theory that the alternate firing of neurons which have a combined frequency above 1,000 waves per second enables us to sense sounds with frequencies above 1,000 waves per second71
3852915486Conduction Hearing LossHearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea72
3852916887Sensorineural Hearing LossHearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves73
3852917405KinesthesisThe system for sensing the position and movement of individual body parts74
3852917798Vestibular SenseThe sense of body movement and position, including the sense of balance75
3852918479Semi-circular canalsconnected to the cochlea, they contain fluid that moves when your head moves or tilts. Involved in kinesthesis76
3873449180GustationThe sense of taste77
3873449181PapillaeThe tiny bumps on your tongue that are lined with taste buds78
3873454043Taste budsLine the papillae and house taste receptors79
3873463724Sweet, Salty, Sour, Bitter, UmamiThe 5 Basic Tastes80
3873466168Sensory Interactionthe principle that one sense may influence another, as when the smell of food influences its taste81
3873469802McGurk EffectAn illusion occurs where the auditory component of one sound is paired with the visual component of another sound, leading to the perception of a third sound82
3873474854OlfactionThe sense of smell83
38734793704 Basic Skin SensesPressure, warmth, cold, pain84
3873482117Phantom Limb Syndromethe perception of sensations, including pain, in a limb that has been amputated85
3896090971ESP (Extra-Sensory Perception)perception occurring independently of sight, hearing, or other sensory processes. The scientific consensus does not view ______________ as a real phenomenon86
3896091922Parapsychologya field of study concerned with the investigation of paranormal and psychic phenomena which include telepathy, precognition, clairvoyance, psychokinesis, near-death experiences, reincarnation, apparitional experiences, and other paranormal claims. It is often identified as pseudoscience87
3896093235Gate-Control Theory of PainTheory that asserts that non-painful input closes neural pathways to painful input, which prevents pain sensation from traveling to the central nervous system.88
3896100937Dark Adaptationthe recovery of the eye's sensitivity to visual stimuli in darkness after exposure to bright lights89
3896101261Light Adaptationthe recovery of the eye's sensitivity to visual stimuli in light after exposure to darkness90
3896101621PinnaThe outer part of the ear. Also referred to as the auricle91
3896102440Phi Phenomenonthe optical illusion of perceiving continuous motion between separate objects viewed rapidly in succession92
3896103744Supertastera person who experiences the sense of taste with far greater intensity than average. Women are more likely to be ___________, as are those from Asia, South America and Africa.93
3896105142Primingis an implicit memory effect in which exposure to one stimulus influences the response to another stimulus.94
3896107478Bipolar Cellsis a type of neuron which has two extensions. __________ are specialized sensory neurons for the transmission of special senses. As such, they are part of the sensory pathways for smell, sight, taste, hearing and vestibular functions.95
3896108694Negative afterimageis a non-specific term that refers to an image continuing to appear in one's vision after the exposure to the original image has ceased.96
3896110025Auditionthe ability to hear97
3896113564Rubber hand illusionSubjects with normal brain function were positioned with their left hand hidden out of sight. They saw a lifelike _________ in front of them. The experimenters stroked both the subjects hidden left hand and the visible ______and with a paintbrush. The experiment showed that if the two hands were stroked synchronously and in the same direction, the subjects began to experience the ________ as their own.98
3896431218Müller-Lyer illusionThe top line looks longer than the bottom one99
3896564765Perceptual Seta mental predisposition to perceive one thing and not another100

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