Dataset: Early visual experience refines the retinotopic organization within and across visual cortical regions

Dataset for the article "Early visual experience refines the retinotopic organization within and across visual cortical regions". <strong>Funding:</strong> The study was supported by the German Research Foundation (DFG 2625/10-1) and has received funding from the European Union’s Horizon 2020 Framework Programme for Research and Innovation under the Specific Grant Agreement numbers 720270 (Human Brain Project SGA1), 785907 (Human Brain Project SGA2) and 945539 (Human Brain Project SGA3). RG was additionally supported by the Hamburg Institute for Advanced Study (HIAS). <strong>Additional information for the dataset:</strong><br> ppt = participant code (16: SC01, ... , SC08, CC01, ... , CC08)<br> group = group (2: 1 = sighted control, 2 = cataract reversal)<br> poi = patch of interest of a vertex (6: V1d, V1v, V2d, V2v, V3d, V3v)<br> hemisphere = hemisphere (2: LH, RH)<br> VertexID = ID of vertex in standardized mesh<br> eccbin = eccbin of the vertex, according to "ecc" column<br> 1: 0.5° – 1.5°, 2: 1.5° 17 - 2.5°, 3: 2.5° - 3.5°, 4: 3.5° - 4.5°, 5: 4.5° - 5.5°, 6: 5.5° - 6.61°<br> eccfine = finer bins of eccentricity for linear model <br> 0.5° - 1°, 1° - 1.5°, 1.5° - 2°, 2° - 2.5°, 2.5° - 3°, 3° - 3.5°, 3.5° 19 - 4°, 4° - 4.5°, 4.5° - 5°, 5° - 5.5°, 5.5° - 6°, 6°- 6.61°<br> pois.dv = patch of interest across dorsal and ventral stream (3: V1, V2, V3)<br> X/Y/Z = coordinates of vertex<br> R = square root of the explained variance of the best fitting pRF model per vertex, used as threshold<br> p.value.R = associated p-value<br> X = x location of the pRF model assigned to a vertex (negative x values [left visual field] on right hemisphere)<br> p.value.X = associated p-value<br> Y = y location of the pRF model assigned to a vertex (negative y values [lower visual field] dorsally)<br> p.value.y = associated p-value<br> s = receptive field size of the pRF model assigned to a vertex<br> p.value.s = associated p-value<br> ecc = eccentricity of the pRF model assigned to a vertex (in degrees of visual angle) obtained by applying the equation ecc = sqrt(x2 + y2) at each vertex<br> p.value.ecc = associated p-value<br> PolarAngle = polar angle of the pRF model assigned to a vertex; estimates of the location in polar coordinates; <br> the calculated angle α is expressed relativ to the positive (right pointing) x axis and is simply <br> obtained by applying the equation α = atan2(-y, x) at each vertex.<br> p.value.PA = associated p-value<br> CMF = cortical magnification factor [mm/deg] of vertex, derived by dividing the vertex mesh distance by the vertex-to-vertex pRF xy coordinates distance <br> (in visual field) for neighboring voxels with R &gt; 0.1 and normalizing it by the number of vertices <br> p.value.CMF = associated p-value<br> logMAR = Snellen visual acuity measurement in logarithm of the minimum angle of resolution assessed with the FrACT test <br> vernier = Vernier acuity values in arcsec assessed with the FrACT test

本数据集对应论文《早期视觉经验优化视觉皮层区域内及跨区域的视网膜拓扑组织（retinotopic organization）》。
<strong>资助说明：</strong>本研究得到德国研究基金会（German Research Foundation, DFG）项目2625/10-1资助，并获得欧盟“地平线2020”研究与创新框架计划资助，具体专项协议编号为720270（人类脑计划SGA1）、785907（人类脑计划SGA2）及945539（人类脑计划SGA3）。RG额外获得汉堡高等研究院（Hamburg Institute for Advanced Study, HIAS）的资助。
<strong>数据集补充说明：</strong>
ppt：被试编号（共16例：SC01至SC08、CC01至CC08）
group：分组（共2组：1组为正常视力对照组，2组为白内障逆转组）
poi：顶点感兴趣斑块（patch of interest），共6类：V1d、V1v、V2d、V2v、V3d、V3v
hemisphere：脑半球（共2类：左侧半球LH、右侧半球RH）
VertexID：标准化网格中顶点的唯一标识ID
eccbin：顶点的视觉偏心度区间，依据“ecc”列划分：1: 0.5° – 1.5°，2: 1.5° – 2.5°，3: 2.5° – 3.5°，4: 3.5° – 4.5°，5: 4.5° – 5.5°，6: 5.5° – 6.61°
eccfine：用于线性模型的更精细视觉偏心度区间：0.5° – 1°、1° – 1.5°、1.5° – 2°、2° – 2.5°、2.5° – 3°、3° – 3.5°、3.5° – 4°、4° – 4.5°、4.5° – 5°、5° – 5.5°、5.5° – 6°、6°– 6.61°
pois.dv：背侧和腹侧视觉通路的感兴趣皮层斑块，共3类：V1、V2、V3
X/Y/Z：顶点的空间坐标
R：单个顶点最佳拟合群体感受野（population receptive field, pRF）模型的解释方差平方根，用作阈值
p.value.R：对应的p值
X：分配给单个顶点的pRF模型的x坐标位置（右侧半球的负x值对应左侧视觉野）
p.value.X：对应的p值
Y：分配给单个顶点的pRF模型的y坐标位置（背侧皮层区域的负y值对应下视觉野）
p.value.y：对应的p值
s：分配给单个顶点的pRF模型的感受野尺寸
p.value.s：对应的p值
ecc：分配给单个顶点的pRF模型的视觉偏心度（单位为视角度），通过在每个顶点应用公式`ecc = √(x² + y²)`计算得到
p.value.ecc：对应的p值
PolarAngle：分配给单个顶点的pRF模型的极角；极坐标下的位置估计值；计算得到的角度α以正对x轴（右向）为基准，通过在每个顶点应用公式`α = atan2(-y, x)`计算得到
p.value.PA：对应的p值
CMF：顶点的皮层放大因子（cortical magnification factor, CMF），单位为[mm/deg]，计算方式为：将相邻顶点的皮层网格间距除以其对应视觉野中顶点间pRF xy坐标距离（仅纳入R>0.1的顶点），再除以顶点总数进行归一化
p.value.CMF：对应的p值
logMAR：通过FrACT测试获得的最小分辨角对数（logarithm of the minimum angle of resolution, logMAR）视力测量值
vernier：通过FrACT测试获得的游标视敏度值，单位为弧秒（arcsec）