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KMID : 0607520160240010102
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Korean Journal of Psychosomatic Medicine
2016 Volume.24 No. 1 p.102 ~ p.108
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The Effect of Bilateral Eye Movements on Face Recognition in Patients with Schizophrenia
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Lee Na-Hyun
Kim Ji-Woong
Im Woo-Young
Lee Sang-Min
Lim Sang-Hyun
Kwon Hyuk-Chan
Kim Min-Young
Kim Ki-Woong
Kim Seung-Jun
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Abstract
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Objectives : The deficit of recognition memory has been found as one of the common neurocognitive impairments in patients with schizophrenia. In addition, they were reported to fail to enhance the memory about emotional stimuli. Previous studies have shown that bilateral eye movements enhance the memory retrieval. Therefore, this study was conducted in order to investigate the memory enhancement of bilaterally alternating eye movements in schizophrenic patients.
Methods : Twenty one patients with schizophrenia participated in this study. The participants learned faces (angry or neutral faces), and then performed a recognition memory task in relation to the faces after bilateral eye movements and central fixation. Recognition accuracy, response bias, and mean response time to hits were compared and analysed. Two-way repeated measure analysis of variance was performed for statistical analysis.
Results : There was a significant effect of bilateral eye movements condition in mean response time(F=5.812, p<0.05) and response bias(F=10.366, p<0.01). Statistically significant interaction effects were not observed between eye movement condition and face emotion type.
Conclusions : Irrespective of the emotional difference of facial stimuli, recognition memory processing was more enhanced after bilateral eye movements in patients with schizophrenia. Further study will be needed to investigate the underlying neural mechanism of bilateral eye movements-induced memory enhancement in patients with schizophrenia.
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KEYWORD
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Schizophrenia, Bilateral eye movements, Recognition memory, Facial emotion
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