[Spectrum analysis of vestibular nystagmus].
A procedure for the spectral analysis of nystagmograms obtained by rotary stimulation with the rate of 180 degrees/s for 20 s has been developed with the aim to reveal the most typical changes in the vestibular nystagmus with one or another form of the cochleovestibular pathology. A signal recorded in the analogous form was processed by computer EC-1022. Periodograms were calculated by the method of the fast Fourier transform and periodogram smoothing by averaging of realization sites. In case of Ménière's disease the third harmonic was not recorded on periodograms when right and left labyrinths were stimulated and in the case of neurites of acoustic nerves, the third or fifth harmonic was not observed. A supposition is advanced that the third harmonic reflects the state of the peripheral area of the vestibular analyzer, while the fifth harmonic--the central one.
Telezhnikov
A V
AV
Bazarov
V G
VG
Savchuk
L A
LA
Beliakova
I A
IA
Kaduk
V G
VG
D000293:Adolescent; D000328:Adult; D004584:Electronystagmography; D006801:Humans; D008575:Meniere Disease / Q000503:physiopathology*; D009760:Nystagmus, Physiologic; D009902:Optic Neuritis / Q000503:physiopathology*; D012016:Reference Values; D013057:Spectrum Analysis; D014722:Vestibule, Labyrinth / Q000502:physiology* / Q000503:physiopathology
Spektral'nyĭ analiz vestibuliarnogo nistagma.