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Fractal property of eye movements in schizophrenia |
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| Authors: | Hidekatsu Yokoyama Shin-ichi Niwa Kenji Itoh Reiko Mazuka |
| Institution: | (1) Department of Neuropsychiatry, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12 Japan, JP;(2) Research Institute of Logopedics and Phomiatrics, Tokyo University School of Medicine, Tokyo, Japan, JP;(3) Department of Psychology, Social and Health Science, Duke University, Durham, North Carolina, USA, US |
| 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. Received: 21 July 1995/Accepted in revised form: 30 April 1996 |
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