眼科学报2006，Vol.22Issue(3)：195-201,7.
Mechanism of Neurophysiological Treatment of Amblyopia Using Functional Magnetic Resonance Imaging
Mechanism of Neurophysiological Treatment of Amblyopia Using Functional Magnetic Resonance Imaging
摘要
Abstract
Purpose: To research the mechanism of neurophysiological treatment of amblyopia by observing the visual cortex activation under rotating grating stimulus with functional magnetic resonance imaging (MRI), and identify the components of the activation.Methods: Nine healthy volunteers were examined using gradient-recalled echo and echo-planar imaging (GRE-EPI) pulse sequence performed at the 1.5 Tesla MRI scanner. In the block designing, rotating grating, stationary grating and luminance were plotted as task states, stationary grating, luminance and darkness as control states, respectively. The tasks of stimuli included 6 steps. Imaging processing and statistical analysis were carried out off-line using statistical parametric mapping (SPM99) software in single-subject.Results: Some individual areas of visual cortex were activated by various stimuli information supplied by rotating grating. The strong activation in the middle of occipital lobe related to the stimuli of luminance, bilateral activation of Brodmann's 19th area related to visual motion perception, and the mild activation in the middle of occipital lobe related to form perception.Conclusion: The plotting of control state is important in bock design. The effective visual information of rotating grating includes components of luminance, visual motion perception and form perception. Functional MRI has potential as a tool for studying the physiological mechanism of visual cortex.关键词
Neurophysiological treatment of amblyopia/Visual cortex/Functional magnetic resonance imagingKey words
Neurophysiological treatment of amblyopia/Visual cortex/Functional magnetic resonance imaging分类
医药卫生引用本文复制引用
Guangming Lu,Zhiqiang Zhang,Ping Liang,Wenzhen Zhou,Lin Li..Mechanism of Neurophysiological Treatment of Amblyopia Using Functional Magnetic Resonance Imaging[J].眼科学报,2006,22(3):195-201,7.基金项目
General grant supported by Nanjing Jinling Hospital (2004082) （2004082）
Basic application grant supported by The Department of Education of Jiangsu Province （）
