Functional MRI data in MATLAB file format for ASL from How the heart speaks to the brain: neural activity during cardiorespiratory interoceptive stimulation

Includes 4 variables: 1) Anticipation_vs_Baseline_Contrast; 2) Peak_vs_Baseline_Contrast; 3) Recovery_vs_Baseline_Contrast; 4) Dose_Order. Variables 1 to 3 are contrast maps built by subtracting the ASL signal averaged over the baseline block (as defined in the text) from the ASL signal averaged across anticipatory, peak and recovery blocks, respectively (as defined in the text). The contrast maps have 5 dimensions and include data for 21 subjects (second dimension) and 4 doses (first dimension), dimension 3-5 are x, y and z directions (91x109 x91 voxels), respectively. Dose orders in these data follow the order given in Dose_Order variable

本数据集包含4个变量：1）预期-基线对比度（Anticipation_vs_Baseline_Contrast）；2）峰值-基线对比度（Peak_vs_Baseline_Contrast）；3）恢复-基线对比度（Recovery_vs_Baseline_Contrast）；4）给药顺序（Dose_Order）。
变量1至3均为对比度图，构建方式为分别从预期区块、峰值区块与恢复区块（详见文本定义）的平均动脉自旋标记（ASL，Arterial Spin Labeling）信号中，减去基线区块（详见文本定义）的平均ASL信号。
该对比度图共包含5个维度，涵盖21名受试者的数据（对应第二维度）与4种给药剂量的数据（对应第一维度）；第三至第五维度分别对应x、y、z空间方向，各维度的体素数量依次为91、109、91。
本数据集内的给药顺序遵循Dose_Order变量所给定的序列。