Analysis of microstructure in brain activation area

我们通过倾斜志愿者的头部，对不同的头部位置进行了相同的fMRI（功能性磁共振成像）研究，结果表明，激活区域受到神经元被激活的激活焦点引流静脉方向的强烈影响。我们还发现，皮层毛细血管床的MR信号中包含来自组织内氧浓度的间质液的信号，并且激活灶的BOLD（血氧水平依赖）信号的总和与诱发电位反应的峰对峰幅度的总和在定量上相关。

We performed the same fMRI(functional Magnetic Resonance Imaging) study for different head positions by tilting the volunteer's head and showed that the activation area is strongly influenced by the orientation of the draining vein from the activation focus where the neurons are activated. And we showed that the MR signal from the cortex capillary bed contains signal from interstitial fluid which may depend on oxygen concentration in tissue, and that the sum of the BOLD(Blood oxygenation level-dependent) signals from the activation focus correlates quantitatively with the sum of the peak-to-peak amplitude of the evoked potential responses.