NYSTAGMOGRAPHY Meaning and
Definition
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Nystagmography is a diagnostic technique used in otolaryngology and neurology to measure and record involuntary eye movements known as nystagmus. It is a specialized form of eye movement analysis used to assess vestibular function, which is responsible for maintaining balance and coordinating eye movements.
During nystagmography, small electrodes or infrared cameras are placed near the patient's eyes to monitor and record the rapid, jerking eye movements that occur during nystagmus. This allows healthcare professionals to analyze the characteristics of the eye movements, such as their direction, velocity, and intensity, which can provide valuable information about the functioning of the inner ear and central nervous system.
Nystagmography is commonly used in the evaluation of patients with vertigo, dizziness, and balance disorders. By assessing the type and pattern of nystagmus, clinicians can distinguish between different vestibular pathologies, such as benign paroxysmal positional vertigo, Ménière's disease, and vestibular neuritis. This diagnostic tool helps guide treatment decisions and provides valuable information for the management of these conditions.
Overall, nystagmography plays a crucial role in the assessment of vestibular function and helps healthcare professionals accurately diagnose and treat patients with vestibular disorders.
Etymology of NYSTAGMOGRAPHY
The word "nystagmography" has its etymology rooted in Greek. It is comprised of two combining forms:
1. "Nystagmo-" comes from the Greek word "nystagmos" (νυσταγμός), which means "nodding". In this context, it refers to the involuntary repetitive rhythmic movements of the eyes, also known as nystagmus.
2. "-graphy" comes from the Greek word "graphia" (γραφία), which means "writing" or "recording".
Thus, combining the two forms, "nystagmography" refers to the process of recording or measuring the movements of the eyes during nystagmus.
