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目的:人类视觉皮层的组织方式是视网膜皮层映射组织,先前研究已经证实视觉皮层在中心视采用这种组织方式,本文主要研究宽周边视的视觉皮层组织方式。方法:本文采用一种可以在核磁共振室中使用的光纤设备,设计了30度、40度、50度、60度的类圆环block刺激,使用1.5T的功能性核磁共振仪器,T1高分辨率图像分辨率为1*1*5.5mm,T2加权图像分辨率为4*4*5.5mm,TR反应时间为6秒,矩阵大小为64*64。核磁共振数据分析使用了SPM2和Brain voyager软件。结果:通过对试验者的数据处理分析,周边视的刺激的反应区域在枕叶上,主要分布在枕叶的前部,刺激反应区域随着偏心率的增大而沿着距状沟从距状沟的后部向前部移动。结论:周边视的视网膜皮层映射组织特性和中心视的特性非常相似。
OBJECTIVE: Human visual cortex tissue is a retinal cortex mapping tissue. Previous studies have demonstrated that visual cortex adopts this tissue approach in the center. This paper mainly studies the visual cortex tissue with wide periphery. Methods: In this paper, a kind of optical fiber device which can be used in NMR chamber was designed and stimulated by a ring block of 30 degrees, 40 degrees, 50 degrees and 60 degrees. The 1.5T functional magnetic resonance apparatus was used. T1 high resolution Rate image resolution is 1 * 1 * 5.5mm, T2 weighted image resolution is 4 * 4 * 5.5mm, TR response time is 6 seconds and matrix size is 64 * 64. Nuclear magnetic resonance data analysis using SPM2 and Brain voyager software. Results: Through the data processing analysis of the experimenter, the peripheral stimuli response area on the occipital lobe was mainly located in the front of the occipital lobe, stimulating the reaction area along the distance ditch from the distance to increase the eccentricity The ditch back moves forward. CONCLUSIONS: The retinal cortex mapping peripheral features are very similar to those of central vision.