Quadrigeminal

Quadrigeminal refers to the quadrigeminal plate, also known as the superior colliculus and inferior colliculus, which are part of the midbrain structure in the human brain. The quadrigeminal plate is involved in visual and auditory reflexes.

Anatomy

The quadrigeminal plate is located in the midbrain, which is part of the brainstem. It consists of two pairs of rounded eminences, the superior colliculus and the inferior colliculus. These structures are involved in the processing of visual and auditory information, respectively.

Function

The superior colliculus is involved in the processing of visual information. It receives direct input from the retina and indirect input from the cortex, basal ganglia, and spinal cord. The superior colliculus is involved in the coordination of eye movements and visual reflexes.

The inferior colliculus is involved in the processing of auditory information. It receives input from several peripheral brainstem nuclei in the auditory pathway, as well as input from the auditory cortex. The inferior colliculus is involved in the reflexive reactions to sounds.

Clinical significance

Damage to the quadrigeminal plate can result in a variety of neurological symptoms, including Parinaud's syndrome, which is characterized by an inability to move the eyes upward, and Collicular syndrome, which is characterized by a variety of visual and auditory symptoms.

See also

• Brainstem
• Midbrain
• Superior colliculus
• Inferior colliculus
• Parinaud's syndrome
• Collicular syndrome

References

Quadrigeminal Resources
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