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| This glossary contains: 19186 medical terms |
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Opthalmoscope
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Opthalmoscope Device for seeing light reflected from the interior of the eye. First built by Hermann von Helmholtz.
RELATED TERMS--------------------------------------
Eye
The organ of sight. The eye has a number of components. These components include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic nerve, choroid and vitreous.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Ocellus
Eye-Cup. A patch of light-sensitive receptor cells sunk into the skin present in some species.
Ocular dominance columns
The primary visual cortex (V1) is organized into alternating columns sensitive to input from the left and right eyes.
On-Center cells
Increase their activity when light increments are presented in their receptive files. Surrounded by an antagonistic region which responds with the opposite polarity. Both ganglion and bipolar cells are separated into two classes, on-center and off-center. The on-center cells have dendrites that branch in the inner portion of the inner plexiform layer. See also Off-Center Cells.
Off-Center cells
Decrease their activity when light increments are presented in their receptive fields. Surrounded by an antagonistic region which responds with the opposite polarity. Both ganglion and bipolar cells are separated into two classes, on-center and off-center. The off-center cells have dendrites that branch in the outer portion of the inner plexiform layer. See also On-Center Cells.
Opsin
Protein portion of rhodopsin.
Opthalmoscope
Optic chiasm
Location where the optic nerve axons from the two retinae join and are reorganized into two separate groups (the optic tracts) that encode information about the right and left visual fields.
Optic disk
Where the ganglion cell axon fibers leave the retina. Contains no photoreceptors and therefore creates a blind spot in the visual field.
Optic nerves
Myelinated axons from the optic disk of each eye which join at the optic chiasm.
Optic radiations
Projections from LGN to primary visual cortex (V1).
Optic tectum
Structure in the mid-brain of cold-blooded vertebrate that receives input from the optic nerve (homologous to the superior colliculi).
RELATED TERMS--------------------------------------
Eye
The organ of sight. The eye has a number of components. These components include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic nerve, choroid and vitreous.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Ocellus
Eye-Cup. A patch of light-sensitive receptor cells sunk into the skin present in some species.
Ocular dominance columns
The primary visual cortex (V1) is organized into alternating columns sensitive to input from the left and right eyes.
On-Center cells
Increase their activity when light increments are presented in their receptive files. Surrounded by an antagonistic region which responds with the opposite polarity. Both ganglion and bipolar cells are separated into two classes, on-center and off-center. The on-center cells have dendrites that branch in the inner portion of the inner plexiform layer. See also Off-Center Cells.
Off-Center cells
Decrease their activity when light increments are presented in their receptive fields. Surrounded by an antagonistic region which responds with the opposite polarity. Both ganglion and bipolar cells are separated into two classes, on-center and off-center. The off-center cells have dendrites that branch in the outer portion of the inner plexiform layer. See also On-Center Cells.
Opsin
Protein portion of rhodopsin.
Opthalmoscope
Optic chiasm
Location where the optic nerve axons from the two retinae join and are reorganized into two separate groups (the optic tracts) that encode information about the right and left visual fields.
Optic disk
Where the ganglion cell axon fibers leave the retina. Contains no photoreceptors and therefore creates a blind spot in the visual field.
Optic nerves
Myelinated axons from the optic disk of each eye which join at the optic chiasm.
Optic radiations
Projections from LGN to primary visual cortex (V1).
Optic tectum
Structure in the mid-brain of cold-blooded vertebrate that receives input from the optic nerve (homologous to the superior colliculi).
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This dictionary contains 19186 terms.
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