Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-18T08:16:57.018Z Has data issue: false hasContentIssue false
  • English
  • Français

The fractal box dimension on human eyeball movement—objective, biological marker of schizophrenia?

Published online by Cambridge University Press:  16 April 2020

Tomasz Kleszczewski  and
Wiesław Rutkiewicz
Tomasz Kleszczewski*
Affiliation:
Department of Biophysics, Medical University of Białystok, ul Mickiewicza 2 A, 15-230Białystok, Poland
Wiesław Rutkiewicz
Affiliation:
Psychiatric Hospital, Choroszcz, Poland
*
*Corresponding author. Tel.: +48-85-748-5667; fax: +48-85-746-8630. Email address: kleszczt@cksr.ac.bialystok.pl
Get access

Abstract

The authors developed a method of measuring the fractal box dimension of the human eyeball movement.We found a fractal property in schizophrenic subjects (n = 20) and normal controls (n = 20). The value of the fractal box dimension for schizophrenic patients differs from the results obtained in the control group.

Keywords

Fractal box dimensionHuman eyeball movementSchizophrenia
Type
Rapid communication
Information
European Psychiatry , Volume 19 , Issue 8 , December 2004 , pp. 514 - 515
Copyright
Copyright © European Psychiatric Association 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Holzman, PS. Smooth-pursuit eye movements in schizophrenia: recent findings. Res Publ Assoc Res Nerv Ment Dis 1975;54:217–31.Google ScholarPubMed
Holzman, PSProctor, LRLevy, DLYasillo, NJMeltzer, HYHurt, SW.Eye-tracking dysfunctions in schizophrenic patients and their relatives. Arch Gen Psychiatry 1974;31(2):145–51.CrossRefGoogle ScholarPubMed
Hutton, SBJoyce, EMBarnes, TRKennard, C.Saccadic distractibility in first-episode schizophrenia. Neuropsychologia 2002;40(10):1729– 36.CrossRefGoogle ScholarPubMed
Kleszczewski, TSwiecicki, AKostrzewska, A.The measurement of luminance of light reflected from the human iris. Cell Mol Biol Lett 1996;1:303–9.Google Scholar
Kleszczewski, TRutkiewicz, WKleszczewska, EModzelewska, BSwiecicki, A.Metoda wyznaczania wymiaru pudełkowego dla ruchu gałki ocznej. In: XI Zjazd Polskiego Towarzystwa Fizyki Medycznej. Warszawa; 1999.Google Scholar
Kleszczewski, TRutkiewicz, WKleszczewska, EModzelewska, B.The fractal analysis of the eyeball movement in patients with diagnosed schizophrenia. In: World congress on medical physics and biomedical engineering. Chicago: Medical Physics; 2000.Google Scholar
Peitgen, H-OJurgens, HSaupe, D.Fractals for the classroom. Part 1: introduction to fractals and chaos. New York: Springer-Verlag; 1992.CrossRefGoogle Scholar
Rybakowski, JKBorkowska, A.Eye movement and neuropsychologi-cal studies in first-degree relatives of schizophrenic patients. Schizophr Res 2002;54(1-2):105–10.CrossRefGoogle ScholarPubMed
Ryu, HMorita, KShoji, YWaseda, YMaeda, H.Abnormal exploratory eye movements in schizophrenic patients vs. healthy subjects. Acta Neurol Scand 2001;104(6):369–76.CrossRefGoogle ScholarPubMed
Yokoyama, HNiwa, SItoh, KMazuka, R.Fractal property of eye movements in schizophrenia. Biol Cybern 1996;75(2):137–40.CrossRefGoogle Scholar
Submit a response

Comments

No Comments have been published for this article.