Biomaterial Database

Influence of lateral head tilting on head-shaking nystagmus. 1997

T Kamei, and T Iizuka, and M Matsuzaki

Department of Otolaryngology, Gunma University School of Medicine, Maebashi, Japan.

We conducted a trial to determine whether or not head-shaking nystagmus (HSN) was influenced by lateral head tilting. Twenty-two patients with unilateral peripheral vestibular lesions were examined between July 1990 and June 1996. All of the patients were found to have horizontal HSN following horizontal head shaking in the upright head position. Eye movements were recorded by electronystagmography with the eyes open in complete darkness. Patients voluntarily tilted their heads to the lateral head positions with the assistance of the examiner as quickly as possible immediately after head shaking in the upright head position. Findings showed that monophasic horizontal HSN and the first phase of biphasic horizontal HSN were suppressed by lateral head tilting. The second phase of biphasic horizontal HSN was influenced differently by head tilting when compared with the first phase. Vertical (down-beating) components in horizontal HSN may appear in the peripheral vestibular lesions, but seem to have no definite relation to head positions.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009760	Nystagmus, Physiologic	Involuntary rhythmical movements of the eyes in the normal person. These can be naturally occurring as in end-position (end-point, end-stage, or deviational) nystagmus or induced by the optokinetic drum (NYSTAGMUS, OPTOKINETIC), caloric test, or a rotating chair.	Nystagmus, Barany,Nystagmus, Caloric,Nystagmus, End-Position,Nystagmus, Positional,Nystagmus, Post-Rotatory,Nystagmus, Thermal,Nystagmus, Barany's,Nystagmus, Physiological,Physiologic Nystagmus,Barany Nystagmus,Barany's Nystagmus,Caloric Nystagmus,End-Position Nystagmus,Nystagmus, Baranys,Nystagmus, End Position,Nystagmus, Post Rotatory,Physiological Nystagmus,Positional Nystagmus,Post-Rotatory Nystagmus,Thermal Nystagmus
D011187	Posture	The position or physical attitude of the body.	Postures
D003624	Darkness	The absence of light.	Darknesses
D004584	Electronystagmography	Recording of nystagmus based on changes in the electrical field surrounding the eye produced by the difference in potential between the cornea and the retina.	Electronystagmographies
D005133	Eye Movements	Voluntary or reflex-controlled movements of the eye.	Eye Movement,Movement, Eye,Movements, Eye
D005260	Female		Females
D006257	Head	The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.	Heads
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man