Arterial pulse as a rare artifact observed on electronystagmography

September 30, 2004     Miyuki Mitsuhashi, MT; Atsunobu Tsunoda, MD; Atsushi Komatsuzaki, MD
We report a rare artifact observed during electronystagmography (ENG) in a 54-year-old woman. Rhythmic waves were seen on ENG even though no corresponding movements of the eyes or eyelids were detected, even by infrared camera monitoring. The rhythmic waves corresponded to the patient's pulse and occurred after the appearance of each QRS complex on electrocardiography (ECG). The waves were believed to have been generated by the pulse of the artery near the electrodes, which represented contamination of plethysmography at the temple. To the best of our knowledge, such an artifact has not been previously reported in the literature. When rhythmic waves unrelated to eye movements are recorded during ENG, an artifact of cardiovascular origin should be ruled out, and ECG and direct observation of the eyes are necessary.

Vestibular findings in a patient presenting with tinnitus and dizziness

September 30, 2004     Kenneth H. Brookler, MD

Vestibular findings in a patient presenting with tinnitus

August 31, 2004     Kenneth H. Brookler, MD

The relationship of tinnitus, hyperacusis, and hearing loss

June 30, 2004     Jeffrey J. Nelson, MD; Kejian Chen, MD, PhD

Vestibular ENG findings in a patient with agoraphobia

May 31, 2004     Kenneth H. Brookler, MD
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