Across
- 1. -the light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin process of visual information
- 7. -muscle colored tissue at front of eye that contains pupil in the center
- 10. -diminished sensitivity as a consequence of constant stimulation
- 14. -the nerve that carries neural impulses from the eye to the brain
- 15. -detect fine detail and give rise to color sensations
Down
- 2. -the nerve that carries impulse from the inner ear to the brain, resulting in the perception of sound
- 3. -a coiled, bony, fluid-filled tube in the inner ear through which sound waves trigger nerve impulses
- 4. -perceiving objects as unchanging even as illumination and retinal images change
- 5. -a laboratory device for testing depth perception in infants and young animals
- 6. -retinal receptors that detect black, white, and gray; necessary for peripheral and twilight vision, when cones don’t respond
- 8. -the transparent structure behind the pupil that changes shape to help focus images on retina
- 9. -retinal disparity and convergence
- 11. -adjustable opening in the center of the eye through which light enter
- 12. -specialized auditory receptor neurons embedded in the basilar membrane
- 13. -the transparent layer forming the front of the eye
