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| Light-sensitive surface at the back of the eye consisting of neurons and photoreceptor cells |
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| Region of the retina where axons forming the optic nerve leavethe eye and where blood vessels enter and leave; this region has no photoreceptors and is thus "blind" |
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| REgion at the center of the retina that is specialized for high acuity; its receptive fields are at the center of the eye's visual field. |
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| Photoreceptor specialized for functionning at low light levels |
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Photoreceptor specialized for color and high visual acuity |
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| Neural cells of hte retina that give rise to the optic nerve. |
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| Large celled visual system neuron that is sensitive to moving stimuli |
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| Small celled visual system neuron that issensitve to form and color differences |
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| Junction fo the opitic nerves from each eye at which the axons from the nasal halves of the retinas cross to the opposite side of the brain |
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| Projections from the retina to the lateral geniculate nucleus to the visual cortex |
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| Primary visual cortex in the occipital lobe; its striped appearance when stained gives it this name |
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| Projections from the retina to the superior colloiculus to the pulvinar to the parietal and temporal visual areas |
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| Cortial organization that represents a funtional unit six cortical layers deep and approximately 0.5mm square and that is perpendicular to the cortical surface |
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| Striate cortex that receives input from the lateral geniculate nucleus |
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Extrastriate cortex (secondary visual cortex) |
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Definition
Visual cortical areas outside the striate cortex |
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| Region in the visual cortex that contains color sesnitive neurons as revealed by staining for cytochrome oxidase |
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Region of the visual world that is seen by the eyes |
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| Region of the visual world that stimulates a receptor cell or neuron |
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A spatially organized neural representation fo the external world |
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| The amount of light reflected by an object relative to its surroundings |
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| Functional column in the visual cortex maximally responsive to information from one eye |
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| Explanation of color vision based on the coding of three primary colors: red, green and blue |
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| Explanation of color vision that emphasizes the importance of the opposition of pairs of colors: red versus green and blue versus yellow |
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| Phenomenon whereby the percieved color of an object tends to remain constant relative to other colors, regardless of changes in illumination |
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| Blindness of an entire left or right visual field |
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| Blindness of one quadrant of the visual field |
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| Small blind spot in the visual field caused by a small lesion or migrains of the visual cortex |
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| Inability to recognize objects ordrawings of objects |
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| Deficit in the visual control of reaching and other movements |
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