Ocular vestibular-evoked myogenic potentials (oVEMP): normative data in healthy individuals (Doctoral thesis)

Σαραβάκος, Παναγιώτης Κ.


he purpose of the study was to identify the characteristics of oVEMP in subjects without vestibular symptoms, as well as to identify the influence of age and gender on the examined parameters.Materials and MethodsA total of 102 people was examined (204 ears) and responses were recorded for 100 people (200 ears). All individuals underwent extensive audiological testing and specifically ear microscopy, pure-tone audiometry and tympanometry. We examined the latencies of N1 and P1, the amplitudes of N1-P1, the thresholds and asymmetry ratio between both sides. The oVEMP were elicited with air-conducted tone-burst stimuli of 500 Hz.ResultsThe average value of the latency of N1 ranged between 10.28 ± 0.45 ms while the latency of P1 ranged between 15.76 ± 0.74 ms. The average amplitude N1-P1 was 4.43 ± 2.59 μVolt, the mean value of the threshold was 86.28 ± 4.53 dB nHL and the mean value of the asymmetry ratio was 4.04 ± 12.96%. The comparison of various parameters between genders as well as between left and right side did not indicate a statistically significant difference. The data were divided into age groups allowing us to examine the effect of age on various parameters. Larger amplitudes were observed for the age group 15-49 years. The remaining parameters did not seem to be affected significantly by age.ConclusionsThe study recorded normative data across a wide age range of normal individuals. The age seems to affect the amplitudes, with highest values occurring in young and middle ages.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής
Subject classification: Προκλητά δυναμικά (Ηλεκτροφυσιολογία)
Keywords: Αιθουσαία μυογενή προκλητά δυναμικά,Φυσιολογικές τιμές,Αιθουσαίο σύστημα,Ελλειπτικό κυστίδιο,Ocular vestibular evoked myogenic potentials,oVEMP,Normative data,Vestibular system,Utricle
URI: http://olympias.lib.uoi.gr/jspui/handle/123456789/29213
Appears in Collections:Διδακτορικές Διατριβές

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