Korean J Psychosom Med.
2016 Jun;24(1):102-108. 10.0000/kjpm.2016.24.1.102.
The Effect of Bilateral Eye Movements on Face Recognition in Patients with Schizophrenia
- Affiliations
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- 1Mirae Hospital, Gimje, Korea.
- 2Department of Psychiatry, Konyang University College of Medicine, Konyang University Hospital, Daejeon, Korea. nujeless@kyuh.ac.kr
- 3Department of Medical Physics, University of Science and Technology, Daejeon, Korea.
- 4Center for Brain and Cognition Measurement, Division of Convergence Technology, Korea Research Institute of Standards and Science, Daejeon, Korea.
- 5Konyang University Myunggok Medical Research Institute, Daejeon, Korea.
- KMID: 2321482
- DOI: http://doi.org/10.0000/kjpm.2016.24.1.102
Abstract
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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