Dil was injected into the left retina, and RGC axons were traced to the optic chiasm. In the wild-type animal, a subset of RGC axons is repelled at the midline and to the binocular pathway (top image; ...

Low Grade Glioma of the Optic Nerves, Chiasm and Tracts. T1-weighted coronal MRIs. Note the diffuse enlargement of both optic nerves, the optic chiasm and both optic tracts. One can easily appreciate ...

A 47 year-old woman developed progressive headaches and difficulty with her vision. Neurological examination revealed a bitemporal hemianopsia. Pituitary Macroadenoma. T1-weighted coronal MRI. Note ...

The optic nerve is the nerve that transmits visual information from the retina to the brain. The optic nerve is composed of retinal ganglion cell axons and support cells. It leaves the orbit (eye) via ...

In a new publication scientists explain the origins of the crossing of nerve tracts in the forebrain. Strange world: in vertebrates, i.e. in humans too, the left half of the brain controls the right ...

Band optic atrophy is described as a horizontal band of optic disc pallor, often associated with a contralateral optic tract lesion and bilateral hemianopic visual field defects. Relative afferent ...

An award-winning presentation during the 2023 ARRS Annual Meeting explained how the novel technique of three-dimensional (3D) slice-to-volume (SVR) MRI allows for precise delineation and measurement ...

Available imaging techniques have a limited ability to detect radiation-induced injury of the normal brain. In particular, there is no noninvasive method available for detection of structural or ...

A 63-year-old man was referred to the Massachusetts General Hospital Neuroendocrine & Pituitary Tumor Clinical Center for management of a pituitary macroadenoma. He experienced increasingly severe ...

Traumatic injury to the brain, spinal cord and optic nerve in the central nervous system (CNS) are the leading cause of disability and the second leading cause of death worldwide. CNS injuries often ...