Search results
27 lip 2023 · The visual pathway refers to the anatomical structures responsible for the conversion of light energy into electrical action potentials that can be interpreted by the brain. It begins at the retina and terminates at the primary visual cortex (with several intercortical tracts).
- Optic Nerve
It is also involved in several reflex arcs related to the...
- Optic Tracts
The optic tract is a large bundle of nerve fibers of the...
- Myelin Sheath
Schwann cells (also known as neurolemmocytes) are flat cells...
- Simple Epithelium
Simple squamous Simple epithelium can be divided into 4...
- Bones of the Orbit
The apex of the orbit is the optic foramen (canal), bound...
- Superior Orbital Fissure
Foramina of anterior cranial fossa (superior view) Olfactory...
- Optic Nerve
19 gru 2022 · The visual system consists of 2 primary parallel pathways: optic and pupillary reflex pathways. Optic Pathway The optic pathway begins in the retina, a complex structure of 10 layers, each serving a distinct function.
This video gives an abbreviated overview of the visual system by concentrating on the pathway from the eyes to the occipital lobe. The video makes the statement (at 0:45) that “specialized cells in the retina called ganglion cells convert the light rays into electrical signals.”
The visual system is the physiological basis of visual perception (the ability to detect and process light). The system detects, transduces and interprets information concerning light within the visible range to construct an image and build a mental model of the surrounding environment.
The visual system has to perform three basic functions: first, to see an object clearly; second, to identify it; and finally, to track it. These roles are carried out by different parts of the visual pathway (Fig. 7.3).
Tracing the Visual Pathways. Nerve signals travel from each eye along the corresponding optic nerve and other nerve fibers (called the visual pathway) to the back of the brain, where vision is sensed and interpreted.
During the visual process, the retina receives a focused image of an object seen by the eyes, producing a visual perception of that object. The nerve pathway that carries impulses from the retina’s visual centre to the eye is known as the optic pathway or visual pathway.
