Concept explainers
To discuss:
Projection pathways from the eyes to the occipital lobe and to the superior colliculi and pretectal nuclei of the midbrain.
Introduction:
The perception of items that are present in the surroundings is termed as sight or vision. This perception occurs by means of reflection or emission of light from those objects. The retina, the neural component, is one of the principle components of the eyeball. It consists of three cell layers, and these cell layers are composed of ganglion cells, bipolar cells, and photoreceptor cells. The photoreceptor cells are involved in the absorption of light and produce an electrical or chemical signal. In the visual pathway, the first-order neurons are the bipolar cells present in the retina. The ganglion cells in the retina are the second-order neurons, and the axons of these neurons are optic nerve fibers.
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