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Correct Answer: electronystagmography system.
the correct instrumentation used in the series of tests to evaluate the vestibular system, where eye movements are measured electro-physically, is the electronystagmography (eng) system.
electronystagmography, commonly referred to as eng, is a diagnostic procedure that is specifically designed to record involuntary eye movements known as nystagmus. nystagmus itself is a visual condition where the eyes make repetitive, uncontrolled movements. these movements often result in reduced vision and depth perception and can affect balance and coordination. eng is critical in assessing the function of the vestibular system, which is an integral part of the inner ear that contributes to our balance and spatial orientation.
eng testing involves placing electrodes around the eyes to capture the electrical potentials generated by eye movements. these electrodes detect the movements of the eyes in various positions and while the head is moved in different directions. this setup allows physicians to monitor how the eyes move in response to stimuli and hence assess the integrity of the pathways involved in controlling eye movements.
this test helps in diagnosing the causes of vertigo, dizziness, and balance dysfunction by providing detailed information about the interactions between the vestibular system, the brain, and the muscles controlling eye movements. abnormal results from an eng can indicate a dysfunction within the vestibular system, which may be central (involving the brain or brainstem) or peripheral (involving the vestibular organs of the inner ear).
in conclusion, the electronystagmography system is an essential tool in the field of otolaryngology and neurology for the evaluation of patients experiencing symptoms like dizziness and balance disorders. through the precise measurement of eye movements, eng plays a crucial role in diagnosing and guiding the treatment of vestibular disorders.
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