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Biological Cybernetics

, Volume 75, Issue 2, pp 137–140 | Cite as

Fractal property of eye movements in schizophrenia

  • Hidekatsu Yokoyama
  • Shin-ichi Niwa
  • Kenji Itoh
  • Reiko Mazuka

Abstract.

 On the basis of a temporal model of animal behavior we conducted temporal analysis of eye movements in schizophrenic subjects (n=10) and normal controls (n=10). We found a fractal property in schizophrenic subjects, the fixation time of eye movement during reading ambiguous and difficult sentences showing a clear inverse power law distribution. An exponential distribution of a nonfractal nature was found in normal controls.

Keywords

Schizophrenia Normal Control Fractal Property Exponential Distribution Fixation Time 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Hidekatsu Yokoyama
    • 1
  • Shin-ichi Niwa
    • 1
  • Kenji Itoh
    • 2
  • Reiko Mazuka
    • 3
  1. 1.Department of Neuropsychiatry, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12 JapanJP
  2. 2.Research Institute of Logopedics and Phomiatrics, Tokyo University School of Medicine, Tokyo, JapanJP
  3. 3.Department of Psychology, Social and Health Science, Duke University, Durham, North Carolina, USAUS

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