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The possibilities of optokinetic nystagmus cycles averaging

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The analysis of eyes movements is a crucial part of eyes examination performed by clinicians. One of the characteristic type of eyes movements is a saccade. Its accurate detection is the base for further processing including the estimation of saccade parameters such as velocity, amplitude and duration. This paper presents averaging of optokinetic nystagmus (OKN) cycles that allows comparing and detecting different types of nystagmus phenomena. In order to average the OKN cycles the ENG signal needs to be processed. The saccade detection function is used to find the location of saccades in OKN waveform allowing the ENG signal to be divided into cycles. The resulting cycles are aligned using the Fourier shift method and then averaged providing the OKN cycle model, which can be used for evaluating the eyes at different movement conditions.
Rocznik
Tom
Strony
25--31
Opis fizyczny
Bibliogr. 13 poz., rys., tab.
Twórcy
autor
  • Silesian University of Technology, Institute of Electronics, Akademicka Str. 16, 44 100 Gliwice, Poland.
autor
Bibliografia
  • [1] CLEMENT R.A., WHITTLE J.P., MULDOON M.R., ABADI R.V., BROOMHEAD D.S., AKMAN O., Characterisation of congenital nystagmus waveforms in terms of periodic orbits, Vision Research, 2002, Vol. 42, pp. 2123-2130.
  • [2] GARBUTT S., HAN Y., KUMAR A.N., HARWOOD M., HARRIS CH.M., Vertical optokinetic nystagmus and saccades in normal human subjects, Investigative Ophthalmology & Visual Science, 2003, Vol. 44, No. 9, pp. 3833-3841.
  • [3] HASSAN U., ANWAR M.S., Reducing noise by repetition: introduction to signal averaging, Eur. J. Phys. 2010, Vol. 31, pp. 453.
  • [4] KIM K.G., KO J.S., PARK B.R., A new measuring method of slow component velocity for OKN signal, IEEE 5th Inter. Conference on Power Electronics and Drive Systems, 2003, pp. 973-977.
  • [5] KNAP CH.M., GOTTLOB I., MCLEAN R., PROUDLOCK F., Horizontal and vertical look and stare optokinetic nystagmus in healthy adult volunteers, Investigative Ophthalmology & Visual Science, 2008, Vol. 49, No 2, pp. 581-588.
  • [6] ŁĘSKI J., A new possibility of non-invasive electrocardiological diagnosis, Politechnika Śląska, Zeszyty Naukowe, 1994, No. 1233, Gliwice.
  • [7] ŁĘSKI J., Robust weighted averaging, IEEE Trans. on Biomedical Engineering, 2002, Vol. 49, No. 8, pp. 796-804.
  • [8] MICHAELS D.L., TOLE J.R., A microprocessor-based instrument for nystagmus analysis, Proceeding of the IEEE, 1977, Vol. 65, pp. 730-735.
  • [9] NIEMENLEHTO P.H., Constant false alarm rate detection of saccadic eye movements in electro-oculography, Computer Methods and Programs in Biomedicine, 2009, Vol. 96, pp. 158-171.
  • [10] PANDER T., CZABAŃSKI R., PRZYBYŁA T., JEŻEWSKI J., POJDA-WILCZEK D., WRÓBEL J., HOROBA K., BERNYŚ M., A New Method of Saccadic Eye Movement Detection for Optokinetic Nystagmus Analysis, EMBS Conference, San Diego 2012, paper accepted.
  • [11] PASQUARIELLO G., CESARELLI M., ROMANO M., LA GATA A., BIFULCO P., FRATINI A., Waveform type evaluation in congenital nystagmus, Computer Method and Programs in Biomedicine, 2010, Vol. 100, pp. 49-58.
  • [12] SHETH N.V., DELL’OSSO L.F., LEIGH R.J., VAN DOREN CL., PECKHAM H.P., The effects of afferent stimulation on congenital nystagmus foveation periods, Vision Research, 1995, Vol. 35, pp. 2371-2382.
  • [13] WANG C., YANG Q., WEI M., SUN W., LI Z., SUN F., Open-loop system of optokinetic nystagmus eye movement in human, IEEE Inter. Conference on Systems, Man and Cybernetics, 2004, pp. 2664-2668.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-PWA4-0026-0002
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