the optic disk
fovea
thalamus
Unmyelinated nerve fibers are slower than myelinated nerve fibers. The fibers covered by myelin are much faster.
a tract is a bundle or group of nerve fibers located within the brain or spinal cord
Decussation typically takes place in the brainstem and spinal cord, where nerve fibers cross over from one side of the central nervous system to the other. This crossing is important for coordinating movements and sensory information between the brain and body.
Cochlea.
stria
medulla
Calluses and the brain (any place lacking nerve fibers).
It is a bundle of nerve fibers that carry electrical impulses to the brain from the retina.
Spinal Cord.
Each eye contains an optic nerve, as the meet at the optic chiasm, some of the nerve fibers cross over. This sensitive area is referred to as the optic nerve pathway crossover.
The amount of nerve fibers crossing over the Brain .