Across
- 2. The transparent structure behind the pupil that changes shape to help focus
- 8. Ring of muscle tissue that forms the coloured portion of the eye around the pupil and controls the size of the pupil opening
- 9. Adjustable opening in the centre of the eye through which light enters
- 10. When stimuli are below ones' absolute threshold for conscious awareness
- 11. The central focal point in the retina, around which the eye’s come cluster
Down
- 1. When we select, organize, and interpret our sensations
- 3. Physical energy(a stimulus) from the environment converted into neural signals
- 4. The nerve that carries neural impulses from the eyes to the brain
- 5. The point at which the optic nerve leaves the eye, creating a “blind” spot because no receptor cells are located there
- 6. The activation, often unconsciously, of certain associations, thus predisposing one’s perception, memory or response
- 7. Retina receptors that detect black, white, and grey; necessary for peripheral and twilight vision, when cones don’t respond