Which vestibular end organ is primarily tested by oVEMP?

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Multiple Choice

Which vestibular end organ is primarily tested by oVEMP?

Explanation:
The test targets the otolith system, specifically the utricle. When you deliver a sound- or vibration-based stimulus, the utricle’s hair cells send signals that travel through the vestibulo-ocular pathway to the ocular motor system, producing a measurable response from the extraocular muscles (notably the inferior oblique). This makes oVEMP a good probe of utricular function. In contrast, the saccule is more closely linked to neck muscles and is what cVEMP typically reflects, while the semicircular canals respond to angular motion and the cochlea to hearing. So, the presence and characteristics of the oVEMP response primarily inform utricular integrity.

The test targets the otolith system, specifically the utricle. When you deliver a sound- or vibration-based stimulus, the utricle’s hair cells send signals that travel through the vestibulo-ocular pathway to the ocular motor system, producing a measurable response from the extraocular muscles (notably the inferior oblique). This makes oVEMP a good probe of utricular function. In contrast, the saccule is more closely linked to neck muscles and is what cVEMP typically reflects, while the semicircular canals respond to angular motion and the cochlea to hearing. So, the presence and characteristics of the oVEMP response primarily inform utricular integrity.

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