Is Meyers loop part of optic radiation?
Is Meyers loop part of optic radiation?
Meyer’s loop constitutes the most anterior extension of the optic radiation in the temporal horn. Patients with intractable epilepsy may undergo temporal lobe surgery, and their optic tract is susceptible to potential injury.
What is optic radiation?
The optic radiation (OR) is the most prominent white matter relay in the visual system, conveying information from the lateral geniculate nucleus (LGN) to the occipital cortex.
What are the two optic radiations?
The optic radiation (also known as the geniculocalcarine tract, the geniculostriate pathway, and posterior thalamic radiation) are axons from the neurons in the lateral geniculate nucleus to the primary visual cortex.
Is optic radiation same as optic tract?
The optic radiations, or the geniculocalcarine tract, are a projection tract that connects the lateral geniculate nucleus to the primary visual cortex in the occipital lobe. It functions to transmit visual input coming from the retina, the optic nerve, and the optic tract.
Is optic radiation a projection fiber?
cortical and corticothalamic projection fibers that extend between the pulvinar region of the thalamus and the tem- poral and occipital cortex. Among these projection fibers are the optic and the auditory radiations. In fact, the optic radiation is only one of the components of the posterior thalamic peduncle.
What is Baum’s loop?
Baum’s loop (Superior retinal fibers) – pass through the parietal lobe to the cuneus (occipital lobe above calcarine sulcus).
Why is it called the optic tract?
The optic tract (from the Latin tractus opticus) is a part of the visual system in the brain. It is a continuation of the optic nerve that relays information from the optic chiasm to the ipsilateral lateral geniculate nucleus (LGN), pretectal nuclei, and superior colliculus.
Who discovered Meyer’s loop?
Adolf Meyer
Applying histological degeneration staining techniques, in 1907 Adolf Meyer (Fig. 1) defined the first detailed configuration of the optic radiation, according to which the anterior fibers of the optic radiation detour from the lateral geniculate body into the temporal region before reaching the occipital cortex.
Where are optic radiations located?
occipital lobe
The optic radiation, also known as geniculocalcarine tract, is part of the visual pathway, forming the connection between the lateral geniculate nucleus of the pulvinar of the thalamus with the primary visual cortex of the occipital lobe.
Where is Baum’s loop located?
Optic radiations on each side has distinctively superior fibers (Baum’s loop) coursing dorso-medially through the parietal lobe toward the occipital cortex.
