What is optic tract?

What is optic tract?

Listen to pronunciation. (OP-tik trakt) The nerves that travel from the optic chiasm (place in the brain where some of the optic nerve fibers cross) into certain parts of the brain involved in vision.

What happens in the optic tract?

The optic tract is primarily responsible for relaying visual information to the LGN, but it is also peripherally responsible for transducing these bilateral autonomic reflexes, including the pupillary light reflex and pupillary dark reflex.

What do the optic tracts contain?

Each optic tract contains the fibres from the ipsilateral temporal and contralateral nasal retina. Thus, the right optic tract contains fibres from the right halves of the right and left retinae, and the left optic tract from the left halves of the right and left retinae of the eyeballs.

What is the function of the optic chiasm?

The optic chiasm or optic chiasma is an X-shaped space, located in the forebrain, directly in front of the hypothalamus. Crucial to vision, the left and right optic nerves intersect at the chiasm, thus creating the hallmark X-shape.

Where do optic tracts exist?

The optic tract is an extension of the optic nerve located in the brain. It begins at the area where information from the left eye and right eye cross (or “decussate”) to create a complete visual picture.

Where are the optic tracts?

What are the targets of the optic tract?

The major targets of the optic tract are the lateral geniculate nucleus in the thalamus and the superior colliculus in the midbrain.

What is the structure and function of the optic chiasm?

The optic chiasm is an X-shaped structure formed by the crossing of the optic nerves in the brain. The optic nerve connects the brain to the eye. To biologists, the optic chiasm is thought to be a turning point in evolution.

What is the function of optic chiasm?

What is the difference between binocular and monocular vision?

In monocular vision, the eye sees a two-dimensional image in motion, which is sufficient at near distances but not from farther away. In binocular vision, both eyes are used together to perceive motion of an object by tracking the differences in size, location, and angle of the object between the two eyes.

What is the role of the optic tract?

The optic tract is an extension of the optic nerve, conveying information from the optic chiasm to the lateral geniculate nucleus. The optic tracts convey information from the opposite visual field – the right optic tract will convey information from the left visual field, and vice versa.

What functions does the optic nerve do?

Optic nerve: The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. These impulses are dispatched through the optic nerve to the brain, which interprets them as images.

What is the function of optic chiasm in the body?

The optic nerves usually merge in our visual system at a location called the optic chiasm. The function of Optic Chiasm: The optic chiasm plays a crucial role in visual input information retinotopic depiction and is situated above the pituitary gland, anterior to the pituitary stalk, and inferior to the hypothalamus.

What is the function of optic nerves in human eye?

The optic nerve’s main function is to transfer visual information from the retina in your eye to the visual centers of your brain in the form of impulses, allowing your brain to translate these impulses as images in your head.