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Correlated Size Variations Measured in Human Visual Cortex V1/V2/V3 with Functional MRI

机译:具有功能性MRI的人类视觉皮质V1 / V2 / V3中测量的相关尺寸变化

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The retinotopic characteristics on human peripheral vision are still not well known. The position, surface area and visual field representation of human visual areas V1, V2 and V3 were measured using fMRI in 8 subjects (16 hemispheres). Cortical visual field maps of the 120deg were measured using rotating wedge and expanding ring stimuli. The boundaries between areas were identified using an automated procedure to fit an atlas of the expected visual field map to the data. All position and surface area measurements were made along the boundary between white matter and gray matter. In this study, we developed a new visual presentation system widest view (60 deg of eccentricity). The wide-view visual presentation system was made from nonmagnetic optical fibers and a contact lens, so can use in general clinical fMRI condition and the cost is lower. We used the newly wide view visual presentation system, the representation of the visual field in areas V1, V2 and V3 spans about 2223 mm~2, 1679 mm~2 and 1690 mm~2.
机译:人周围视觉的视网膜运动特征仍然是不公知的。使用FMRI在8-受试者(16个半球)中测量人类视觉区域V1,V2和V3的位置,表面积和视野表示。使用旋转楔形和膨胀环刺激来测量120deg的皮质视野图。使用自动化程序识别区域之间的边界,以将预期的视野映射的图例适合数据。沿着白质和灰质之间的边界进行了所有位置和表面积测量。在这项研究中,我们开发了一种新的视觉演示系统最广泛的视图(60°偏心率)。广泛的视觉演示系统由非磁性光纤和隐形眼镜制成,因此可以在一般临床FMRI条件下使用,并且成本较低。我们使用了新宽视的视觉演示系统,在V1,V2和V3区域的视野表示约2223mm〜2,1679 mm〜2和1690 mm〜2。

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