|Brain: Optic chiasm|
|Visual pathway with optic chiasm (X shape outlined, red) (1543 image from Andreas Vesalius' Fabrica)|
|Gray's||subject #197 883|
Specifically, in the optic chiasm, the nerves connected to the right eye that attend to the right temporal visual field (located in the nasal portion of the right retina) cross to the left half of the brain, while the nerves from the left eye that attend to the left temporal visual field (located in the nasal portion of the left retina) cross to the right half of the brain.
Optic chiasm in cats
In Siamese cats with certain genotypes of the albino gene, this wiring is disrupted, with less of the nerve-crossing than is normal, as a number of scholars have reported.  To compensate for lack of crossing in their brains, they cross their eyes (strabismus). 
Scheme showing central connections of the optic nerves and optic tracts.
- ↑ OMIA
- ↑ R. W. Guillery; J. H. Kaas. Genetic Abnormality of the Visual Pathways in a "White" Tiger. Science. 1973 Jun 22;180(92):1287-9. GS
- ↑ Guillery, R. Visual pathways in albinos. Scientific American 1974 May;230(5):44-54. PubMed
- Jeffery, Glen. Architecture of the Optic Chiasm and the Mechanisms That Sculpt Its Development Physiol Rev, Oct 2001; 81: 1393 - 1414.
Sensory system - Visual system
|Eye • Optic nerve • Optic chiasm • Optic tract • Lateral geniculate nucleus • Optic radiation • Visual cortex • Blobs|
|Epithalamus||Pineal body • Habenula (Habenular nuclei) • Stria medullaris • Habenular trigone|
|Thalamus/nuclei||paired: AN • Ventral (VA/VL, VP/VPM/VPL) • Lateral (Pulvinar) • Metathalamus (MG, LG)
surface: reticulartracts to thalamus: Mammillothalamic tract • Thalamic fasciculus • Lenticular fasciculus • Ansa lenticularis • Medial lemniscus • Trigeminal lemniscus • Spinothalamic tract • Lateral lemniscus
|Hypothalamus||autonomic zones: Anterior (parasympathetic/heat loss) • Posterior (sympathetic/heat conservation)
tracts: Medial forebrain bundlePituitary: (Posterior is diencephalon, but anterior is glandular)
|Subthalamus||Subthalamic nucleus • Zona incerta|
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