visual pathway


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vis·u·al path·way

neural paths and connections within the central nervous system, beginning with the retina and terminating in the occipital cortex.

visual pathway

a pathway over which a visual sensation is transmitted from the retina to the brain. A pathway consists of an optic nerve, the fibers of an optic nerve traveling through the optic chiasm to the lateral geniculate body of the thalamus, and optic radiations terminating in an occipital lobe. Each optic nerve contains fibers from only one retina. The optic chiasm contains fibers from the nasal parts of the retinas of both eyes; these fibers cross to the opposite side of the brain at the optic chiasm. The fibers from the temporal part of each eye do not cross at the optic chiasm, pass through the lateral geniculate body on the same side of the brain, and continue back to the occipital lobe. Thus the optic tracts, occipital lobe, lateral geniculate bodies of the thalamus, and optic chiasm each contain nerve fibers from both eyes. If the right optic tract were destroyed, a person would lose partial vision in both eyes-the right nasal and the left temporal fields of vision.
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Visual pathway

vis·u·al path·way

(vizh'ū-ăl path'wā)
Neural paths and connections within the central nervous system, beginning with the retina and terminating in the occipital cortex.

visual

pertaining to vision.

visual acuity test
performed by walking the animal through an obstacle course. A room full of unfamiliar furniture, or a stairway is usually used for companion animals. Farm animals are led or driven through a passage with drums or boxes strewn across it.
visual cortex
the part of the cerebral cortex which deals with images received by the visual apparatus.
visual evoked potentials (VEPs)
see visual evoked response.
visual following
movement of the eyes in watching a moving object.
visual pathway
the bulk of the retinal ganglion cells have axons in the optic nerve which synapse with cells in the lateral geniculate nucleus in the thalamus, which project to the visual cortex in the occipital lobe of the cerebrum; in a secondary visual pathway the axons of the remainder of the retinal ganglion cells terminate in the anterior rostral colliculus (pretectal region).
visual system
includes the eye, the optic nerve and the optic cortex in the cerebrum. The oculomotor, trochlear, abducent, trigeminal and facial nerves are all involved in reflexes which are part of the animal's responses to visual stimuli.
visual yellow
all-trans retinal; see retinal (2).
References in periodicals archive ?
When scanning 9-year-olds who were good versus poor readers, we found two interesting differences in the ventral visual pathway.
When the visual areas in the occipital lobes are destroyed, especially early in life, and the person appears to be without conscious vision, subconscious visual awareness ("blind sight") may still exist because the occipital lobes receive increased visual input from the superior collicular (retinal-tectal) visual pathways (Giaschi et al.
Despite the relatively large number of studies examining neural visual pathways, the neural mechanism leading to the awareness of visual stimulus remains unclear.
Assessment of axonal degeneration along the human visual pathway using diffusion trace analysis.
Sensory, interneuronal, and motor interactions within Hermissenda visual pathway.
However, should one eye receive inadequate visual input, the visual pathway will not develop appropriately, leaving the vision of that eye impaired.
This circuit is the equivalent of the single neuron firing in the fly's visual pathway.
Although the visual system is not necessary for an organism to synchronize, or entrain, its behavior to the external photoperiod, there is evidence to suggest that an aberrant visual pathway may alter the organism's response to light.
The fMR results showed that during the auditory matching task the readers with dyslexia had increased activity in the visual pathway of the brain, while that same region was deactivated in children without dyslexia.
Lewis, the prevalence of tumors located along the anterior visual pathway was 15%.
Your goal is to create a visual pathway that leads the viewer's eye around and through the design.