Nucleus prepositus
Nucleus prepositus[edit | edit source]
The nucleus prepositus is a small but significant structure located in the brainstem, specifically within the medulla oblongata. It plays a crucial role in the control of eye movements and is involved in the stabilization of gaze.
Anatomy[edit | edit source]
The nucleus prepositus is situated near the abducens nucleus and the hypoglossal nucleus, lying adjacent to the medial longitudinal fasciculus. It is part of the reticular formation, a network of interconnected nuclei that are involved in various functions including arousal, sleep, and motor control.
Function[edit | edit source]
The primary function of the nucleus prepositus is to assist in the maintenance of gaze stability. It acts as an integrator for vestibular and visual inputs, helping to coordinate the vestibulo-ocular reflex (VOR). This reflex is essential for stabilizing images on the retina during head movements by producing compensatory eye movements.
Clinical Significance[edit | edit source]
Damage to the nucleus prepositus can result in nystagmus, a condition characterized by involuntary eye movements. This can lead to dizziness, vertigo, and balance issues. Understanding the role of the nucleus prepositus is important in diagnosing and treating disorders related to eye movement and balance.
Related Structures[edit | edit source]
Related Pages[edit | edit source]
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