What are the excellent colliculi?

Excellent colliculi are paired structures in part of the brain stem called TECTUM. They are located around the pineal gland, under the thalam and over the lower colliculi. These structures are located on the roof of the middle brain and the Latin term for the roof is tactum , so they are also called optical tectum. Both superior Colliculi receive a visual input from the retina and other sensory input from the lower colliculi, spinal cord, cerebellum, preliminary, periaqueductal gray and nigra substantia. The function of the superior Colliculi not only includes the direction of eye movements, but also the multimodal integration of acoustic and somatosensory information for attention and spatial orientation.

in neuroanatomy, it is top and quaplations, which is Latin -Trin, which means quadruplet -Body. Every superior colliculus is conventionally divided into seven layers. The three highest layers are called surface layers, the other two are called middle layers and the innermost two are called deep layers. LaminateAnd III is also known as an optical layer, because the axons of the optical nerve meet in this layer. Three superficial layers receive sensory input from the retina, pectum, parabigeminal nuclei and areas related to the vision of hemispheres, such as the primary visual bark, visual bark and field of the front eye.

intermediate layers are divided into Lamina IV and V or stratum griseum intermediate and stratum album intermediale. Of the seven layers, Lamina IV is the strongest and neuroanatomists often divide it further into the upper and lower parts. Deep layers include laminate VI and VII, or stratum griseum profundum and stratum album Profundum. Middle and deep layers receive entry from multiple association areas of the human brain.

As far as output or eferent is concerned, they have both superior colliculi axonal projection into various subcortical structures such as lower colliculus, reticular formation, spinal cord, lateralGeniculate nucleus and pulvinar thalamu. Pulvinar is considered to be the center of the image interpretation that helps the body to maintain a stable visual environment despite changes in the retina position. Through their associations with different parts of the body that control spatial recognition and position, the superior Colliculi is able to facilitate the movement of the head and eyes towards visual and auditory stimuli and help in rapid eye movements called saccades.