Term
|
Definition
| The eye lens changes shape to focus near or far object on the retina |
|
|
Term
|
Definition
| The point at which the optic nerve leaves the eye, creating a blind spot because no receptor cells are located there. |
|
|
Term
|
Definition
Analysis that begins with the sensory receptors & works up to the brain's integration of sensory info.
EX: Detect lines, angles and colors to form a picture/painting |
|
|
Term
|
Definition
| Retinal receptor cells that are near the center of the retina & that function in daylight/ in well-lit conditons. Detect fine detail & rise to color sensation. |
|
|
Term
|
Definition
| Nerve cells in the brain that respond to specific features of a stimulus, such as shape, angle or movement. |
|
|
Term
|
Definition
| the central focal point in the retina, around which the eye's cones cluster. |
|
|
Term
|
Definition
theory that opposing retinal process (red-green, blue-yellow,white-black) enable color vision
Discovered by Ewald Hering |
|
|
Term
|
Definition
| the nerve that carries neural impulses from the eye to the brain |
|
|
Term
|
Definition
| Is the part of the brain where the optic nerve partially cross. |
|
|
Term
|
Definition
| Part of the cerebral cortex responsible for processing visual information. It is located in the occipital lobe. |
|
|
Term
|
Definition
Processing of many aspects of a problem stimutaenously
discovered by David Hubel& Livingston. |
|
|
Term
|
Definition
| Process of organizing & interpreting sensory info, enabling us to recognize meaningful objects & events. |
|
|
Term
|
Definition
| Study of relationship between the physical characteristics of stimuli, such as their intensity and our phsychological experience of them. |
|
|
Term
|
Definition
| Light sensitive inner surface of the eye, containing receptor rods & cones. Begin processing of visual info. |
|
|
Term
|
Definition
| Retinal receptors that detect black, white, and gray; necessary for peripheral & twighlight vision when cones dont respond. |
|
|
Term
|
Definition
| Diminished sensitivity as a consequence of constant stimulation. |
|
|
Term
|
Definition
| Info processing guided by higher level mental processes, as when we construct perception drawing on our experiences and expectations. |
|
|
Term
| Young-Helmholtz trichromatic theory |
|
Definition
Theory that the retina contains 3 different color receptors- which, when stimulated in combination can produce the perception of any color
Discovered by Herman Von Helmholtz & Thomas Young. |
|
|
Term
| Sensory & perceptual processes make sense of the visual world |
|
Definition
| Our sense detect the visual world such lines, angles and colors. Then our perception interprets these sense. |
|
|
Term
| Structure of retina (rods, cones, bipolar and ganglion glands) |
|
Definition
| Outer layer of cells. Then there are buried receptor cells( rods and cones).Bipolar and Ganglion glands are inside, in the middle of the retina. |
|
|
Term
| Visual info from retina to visual cortex |
|
Definition
| Light enters the eye, triggering a reaction in the rods and cons at back of retina. Chemical reaction activates bipolar cells. Bipolar cells activate ganglion cells, axons converge to from the optic nerve. Optic nerve transmits info to the cortex. |
|
|
Term
| Huebel and Wiesel's work on feature detectors |
|
Definition
| demonstrated that neurons in the occipital lobes visual cortex recieve info from individual ganglion cells in the retina. Regions have different visual "duties" like recognizing faces and such. |
|
|
Term
| Difference of Young-Helmoltz and Opponent-process theory |
|
Definition
| The Trichromatic Theory is about the cone receptors behind the retina in your eye, whereas the Opponent Process Theory deals with the neurones in your brain. |
|
|
