Across
- 6. the theory that opposing retinal processes (red-green, yellow-blue, white-black) enable color vision
- 9. the adjustable opening in the center of the eye through which light enters
- 10. retinal receptors that detect black, white, and gray; necessary for peripheral and twilight vision, when cones don't respond
- 15. the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events
- 17. the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment
- 18. ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
- 19. the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them
- 20. the minimum stimulation needed to detect a particular stimulus 50 percent of the time
Down
- 1. conversion of one form of energy into another (transforming of stimulus energies such as sights, sounds, and smells into neural impulses our brains can interpret.)
- 2. analysis that begins with the sensory receptors and works up to the brain's integration of sensory information
- 3. the principal that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount)
- 4. the transparent structure behind the pupil that changes shape to help focus images on the retina
- 5. the dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth
- 7. the processing of several aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision
- 8. the minimum difference between two stimuli required for detection 50 percent of the time (also called just noticeable difference).
- 11. the nerve that carries neural impulses from the eye to the brain
- 12. 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
- 13. information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations
- 14. the amount of energy in a light or sound wave, which we perceive as brightness or loudness, as determined by the wave's aplitude
- 16. retinal receptor cells that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. Detect fine detail and give rise to color sensations