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AP PSYCH section 2.b
| Term | Definition |
|---|---|
| Retina | is 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. Transduction occurs then passed to the bipolar cells and the ganglion cells |
| Cornea | The clear, dome-shaped outer protective layer covering the front of the eye. |
| Pupil | The pupil is a small adjustable opening in the center of the eye through which light passes. |
| Iris | ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening by expanding and contracting over the pupil |
| Lens | transparent structure behind the pupil that changes shape to help focus images on the retina |
| Accommodation | Lens changes its curvature and thickness; hyperopia and myopia |
| Rods | sensitive to movement, necessary for peripheral and twilight vision. Located along the retina’s outer periphery and they share connections to a single bipolar cell sending a combined message to the brain |
| Cones | have their own hotline to the brain: One cone transmits its message to a single bipolar cell, which relays the message to the visual cortex (where a large area receives input from the fovea) |
| optic nerve | comprised of the axons of the ganglion cells. It leaves through the back of the eye and carries the neural impulses from the eye to the brain |
| Ganglion and bipolar | They receive chemical messages (neurotransmitters) directly from the rods and cones when light activates them. |
| Retina | is 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. Transduction occurs then passed to the bipolar cells and the ganglion cells |
| Cornea | The clear, dome-shaped outer protective layer covering the front of the eye. |
| Pupil | The pupil is a small adjustable opening in the center of the eye through which light passes. |
| Iris | ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening by expanding and contracting over the pupil |
| Lens | transparent structure behind the pupil that changes shape to help focus images on the retina |
| Accommodation | Lens changes its curvature and thickness; hyperopia and myopia |
| Rods | sensitive to movement, necessary for peripheral and twilight vision. Located along the retina’s outer periphery and they share connections to a single bipolar cell sending a combined message to the brain |
| Cones | have their own hotline to the brain: One cone transmits its message to a single bipolar cell, which relays the message to the visual cortex (where a large area receives input from the fovea) |
| optic nerve | comprised of the axons of the ganglion cells. It leaves through the back of the eye and carries the neural impulses from the eye to the brain |
| Ganglion and bipolar | They receive chemical messages (neurotransmitters) directly from the rods and cones when light activates them. |
| after images | when certain ganglion cells in the retina are activated while othersare not. This leaves a lingering image in your eye. |
| Blindsight | A condition in which a person can respond to a visual stimulus without consciously experiencing it. |
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nuhaSalim