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Eye movements in patients with schizophrenia: visual stimuli, semantic content and psychiatric symptoms
Author(s) -
Ishizuka K.,
Kashiwakura M.,
Oiji A.
Publication year - 1998
Publication title -
acta psychiatrica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.849
H-Index - 146
eISSN - 1600-0447
pISSN - 0001-690X
DOI - 10.1111/j.1600-0447.1998.tb10016.x
Subject(s) - eye movement , fixation (population genetics) , psychology , fixation time , audiology , schizophrenia (object oriented programming) , association (psychology) , positive and negative syndrome scale , psychosis , psychiatry , medicine , neuroscience , population , environmental health , psychotherapist
In order to explore a possible association between psychiatric symptoms and eye movements, 32 patients with schizophrenia were examined using an eye mark recorder in combination with the Positive and Negative Syndrome Scale, and were compared with 32 controls. Four types of figures were presented to the subjects: geometrical figures, drawings, story drawings, and sentences. Mean eye fixation time was significantly longer and mean eye scanning length was significantly shorter for the patients than for controls, not only in response to the geometric figures, but also in response to the story drawings. Eye fixation time and scanning velocity were positively correlated with degrees of thought disturbance. The number of eye fixations, eye fixation time and scanning velocity were negatively correlated with degree of depressive tendency.