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| Study of the relation between attributes of the physical world and our psychological experience of them. |
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| Repeated or constant stimulation decreases the number of sensory messages sent to the brain, which causes decreased sensation. |
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| intensity of sound determined by the amplitude of sound waves. |
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| distance between the crests of light or sound waves |
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| a tiny pit in the center of the retina filled with cones and responsible for sharp vision. |
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| inner-ear deftness resulting from damage to the cochlear hair cells or auditory nerve. |
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| tone or sound determined by the frequency of vibration of the sound waves |
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| binocular depth cue in which the closer the object, the more the eyes converge, or turn in |
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| process that converts a particular sensory input into a specific sensation |
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| visual dimension seen as a particular color; determined by the length of a light wave. |
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| readiness to perceive in a particular manner, based on expectations |
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| light sensitive inner surface of the back of the eye, which contains the receptors cells for vision. |
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| receptor cells in the retina that detect shades of gray, are responsible for peripheral vision, and are most sensitive in dim light. |
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| process of selecting, organizing, and interpreting sensory data into useful mental representations of the world |
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| farsightedness (hyperopia) |
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| visual acuity problem that results when the cornea and lens focus an image behind the retina |
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| height of a light or sound wave; pertaining to light, it refers to brightness, and for sound, it refers to loudness |
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| visual receptors concentrated near the center of the retina that ate responsible for color vision and fine detail; most sensitive in brightly lit conditions |
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| false impressions of the environment |
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| visual input from two eyes that allow perception of depth or distance |
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| three arching structures in the inner ear, which contain hair receptors that respond to head movements in order to provide information on balance. |
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| airborne chemicals that affect behavior, including recognition of family members, aggression, territorial marking, and sexual mating. |
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| sensory system for body posture and orientation |
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| minimal difference needed to notice a stimulus change; also called the just noticeable difference (JND) |
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| specialized neurons that respond only to certain sensory information. |
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| theory explaining how we hear lower-pitched sounds |
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| perceptual, or "psychic," abilities that supposedly go beyond the known sense, including telepathy, clairvoyance, precognition, and psychokinesis |
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| visual acuity problem that occurs when the cornea and lens focus an image in front of the retina. |
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| theory explaining how we hear higher pitched sounds |
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| tendency of the brain to ignore environmental factors that remain constant |
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| tendency for the environment to be perceived as remaining the same even with changes in sensory input |
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| filtering out and attending only to important sensory messages |
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| three chambered, snail shaped structure in the inner ear that contains the receptors for hearing |
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| how often a light or sound wave cycles |
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| process of receiving, translating, and transmitting raw sensory date from the external and internal environments to the brain |
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| pertaining to any stimulus presented below the threshold of conscious awareness |
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