Homework answers / question archive / The lowest intensity at which a stimulus can be detected 50 percent of the time The vertical size of the sound wave, which gives rise to the perception of loudness and is measured in terms of decibels A membrane that runs the length of the cochlea and contains the organ of Corti and its sound receptor hair cells Depth cues that require the use of both eyes The binocular depth cue produced by the projection of slightly different images of an object on the retinas of the two eyes Perceptual processes that begin with the analysis of individual elements of the stimulus and work up to the brain's integration of them into a unified perception A small coil-shaped structure of the inner ear that contains the receptors for sound Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea Photoreceptors in the retina that function best in bright light and are differentially sensitive to red, green, or blue wavelengths A binocular depth cue produced by the muscles that rotate the eyes as they focus on nearby objects Limited time periods during which plasticity can occur as a result of experience or in response to injury; in development, a time period in which exposure to particular kinds of stimulation is required for normal growth to occur The progressive increase in brightness that occurs over time as photopigments regenerate themselves during exposure to low levels of illumination A logarithmic measure of sound intensity In signal detection theory, the potentially changing standard of how certain a person must be that a stimulus is present in order to report its presence The smallest difference between two similar stimuli that people can detect A modern theory of color vision that combines the trichromatic and opponent-process theories

The lowest intensity at which a stimulus can be detected 50 percent of the time The vertical size of the sound wave, which gives rise to the perception of loudness and is measured in terms of decibels A membrane that runs the length of the cochlea and contains the organ of Corti and its sound receptor hair cells Depth cues that require the use of both eyes The binocular depth cue produced by the projection of slightly different images of an object on the retinas of the two eyes Perceptual processes that begin with the analysis of individual elements of the stimulus and work up to the brain's integration of them into a unified perception A small coil-shaped structure of the inner ear that contains the receptors for sound Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea Photoreceptors in the retina that function best in bright light and are differentially sensitive to red, green, or blue wavelengths A binocular depth cue produced by the muscles that rotate the eyes as they focus on nearby objects Limited time periods during which plasticity can occur as a result of experience or in response to injury; in development, a time period in which exposure to particular kinds of stimulation is required for normal growth to occur The progressive increase in brightness that occurs over time as photopigments regenerate themselves during exposure to low levels of illumination A logarithmic measure of sound intensity In signal detection theory, the potentially changing standard of how certain a person must be that a stimulus is present in order to report its presence The smallest difference between two similar stimuli that people can detect A modern theory of color vision that combines the trichromatic and opponent-process theories

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1. The lowest intensity at which a stimulus can be detected 50 percent of the time
2. The vertical size of the sound wave, which gives rise to the perception of loudness and is measured in terms of decibels
3. A membrane that runs the length of the cochlea and contains the organ of Corti and its sound receptor hair cells
4. Depth cues that require the use of both eyes
5. The binocular depth cue produced by the projection of slightly different images of an object on the retinas of the two eyes
6. Perceptual processes that begin with the analysis of individual elements of the stimulus and work up to the brain's integration of them into a unified perception
7. A small coil-shaped structure of the inner ear that contains the receptors for sound
8. Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea
9. Photoreceptors in the retina that function best in bright light and are differentially sensitive to red, green, or blue wavelengths
10. A binocular depth cue produced by the muscles that rotate the eyes as they focus on nearby objects
11. Limited time periods during which plasticity can occur as a result of experience or in response to injury; in development, a time period in which exposure to particular kinds of stimulation is required for normal growth to occur
12. The progressive increase in brightness that occurs over time as photopigments regenerate themselves during exposure to low levels of illumination
13. A logarithmic measure of sound intensity
14. In signal detection theory, the potentially changing standard of how certain a person must be that a stimulus is present in order to report its presence
15. The smallest difference between two similar stimuli that people can detect
16. A modern theory of color vision that combines the trichromatic and opponent-process theories. Light waves are coded by red-, blue-, and green-sensitive cones in the retina and by opponent processes thereafter in the visual system
17. Natural opiate-like substances that are involved in pain reduction
18. Sensory neurons that respond to particular features of a stimulus, such as its shape, angle, or color
19. Perceptual organization in which a focal stimulus is perceived as a figure against a background of other stimuli
20. A small area in the center of the retina that contains only cones and where visual acuity is greatest