A study of five parameters of calorically-induced nystagmus in the clinical situation. 1979

S E Press, and C P Goetzinger, and E A Karlsen, and J H Stevens

Latency, duration, and amplitude of response, frequency of nystagmic beats, and speed of the slow component of calorically-induced nystagmus were studied by ENG in 14 normal-hearing adults. Attention was directed toward differences as a function of stimulus temperature (30 degrees C vs 44 degrees C) and side of stimulation. Nystagmus amplitudes were significantly larger from R ear as compared to L ear irrigations, and from cool as compared to warm. Ssc's from cool irrigations were also significantly larger than from warm. A series of t-tests computed for correlated samples indicated that the R ear 30 degrees irrigation, which was the first stimulus for all Ss, was responsible for the significant differences. Implications of the need for research on caloric interstimulus intervals and vestibular response fatigue were presented, and a procedure outlined to avoid erroneous results in caloric testing.

UI MeSH Term Description Entries
D007507 Therapeutic Irrigation The washing of a body cavity or surface by flowing water or solution for therapy or diagnosis. Douching,Lavage,Douchings,Irrigation, Therapeutic,Irrigations, Therapeutic,Lavages,Therapeutic Irrigations
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002150 Caloric Tests Elicitation of a rotatory nystagmus by stimulating the semicircular canals with water or air which is above or below body temperature. In warm caloric stimulation a rotatory nystagmus is developed toward the side of the stimulated ear; in cold, away from the stimulated side. Absence of nystagmus indicates the labyrinth is not functioning. Barany Test,Barany's Test,Baranys Test,Caloric Test,Test, Barany,Test, Barany's,Test, Caloric,Tests, Caloric
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
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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