F-TRACT atlas
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F-TRACT atlas release - December 2021 ====================================== The F-TRACT atlas is provided as .csv (comma-separated values) files that can be read in any table editor. In addition, we provide a Matlab routine allowing to read the features of the atlas as Matlab variables. The atlas is provided for free use for research use only, with limited accuracy, which hopefully will improve with subsequent releases. Please cite David et al. (2013) Probabilistic functional tractography of the human cortex, NeuroImage, and Trebaul et al. (2018) Probabilistic functional tractography of the human cortex revisited, NeuroImage, Lemarechal et al. (2022) A brain atlas of axonal and synaptic delays based on modelling of cortico-cortical evoked potentials, Brain, when using the F-TRACT atlas. - f-tract_v2112 : Connectivity probability as well as features describing fibers biophysical properties, estimated from CCEP data recorded in 780 patients, in the AAL, AICHA, Brodmann, Freesurfer, Hammers, HCP-MMP1, Lausanne2008 (resolutions 33, 60, 125, 250, 500) and MarsAtlas parcellation schemes. The CCEP features are: peak and onset latency (LatStart), amplitude, duration, integral, velocity estimated from the onset latency and the fibers distance between the parcels and axonal conduction delays. Synaptic excitatory and inhibitory delays are also provided for each parcel. All features have been estimated separately for patients younger than 15 y.o. (group "0-15") and patients older than 15 y.o. (group "15-100"). - Features maps : Images representing the connectivity probability and response features for all the regions in the Lausanne2008-60 parcellation.
F-TRACT图谱2021年12月发布版 ====================================== F-TRACT图谱以逗号分隔值（comma-separated values, .csv）文件形式提供，可通过任意表格编辑器读取。此外，我们提供了Matlab脚本，可将图谱特征加载为Matlab变量。本图谱仅免费开放用于科研用途，当前精度有限，后续版本有望逐步优化。使用F-TRACT图谱时，请引用以下文献：David等人（2013）《人类皮层概率功能束追踪》，发表于《NeuroImage》；Trebaul等人（2018）《人类皮层概率功能束追踪的再研究》，发表于《NeuroImage》；Lemarechal等人（2022）《基于皮层皮层诱发电位建模的脑轴突与突触延迟图谱》，发表于《Brain》。 - f-tract_v2112：该数据集包含连通概率以及描述纤维生物物理特性的特征，所有特征均基于780名患者的皮层皮层诱发电位（cortico-cortical evoked potentials, CCEP）数据估算得到，覆盖AAL、AICHA、布罗德曼（Brodmann）、Freesurfer、Hammers、Lausanne2008（分辨率分别为33、60、125、250、500）以及MarsAtlas等多种脑区分割方案。CCEP特征具体包括：峰潜伏期与起始潜伏期（LatStart）、振幅、持续时间、积分值、基于起始潜伏期与脑区间纤维距离估算的传导速度，以及轴突传导延迟。此外，还为每个脑区提供了突触兴奋性与抑制性延迟参数。所有特征均分别针对15岁以下患者（分组"0-15"）与15岁及以上患者（分组"15-100"）独立估算。 - 特征图谱：该类图像展示了Lausanne2008-60脑区分割方案中所有脑区的连通概率与响应特征。
