High spatial resolution fMRI mapping of digit topography and the funneling illusion in SI cortex of the anesthetized squirrel monkeyG. H. TurnerL. M. ChenR. M. FriedmanJ. C. GoreA. W. RoeM. J. Avison
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Then, the imaging sequences are set up, including a high-resolution anatomical scan to reregister to the functional scans. The subject should be reminded of the task instructions, and the functional acquisition needs to be synchronized with the start of the task paradigm. This is critical, as ...
In fMRI the temporal resolution is determined by how quickly each individual image is acquired (TR). Thespatial resolutiondetermines our ability to distinguish changes in an image across different spatial locations. 一些术语Terminology Structural (T1) images: High spatial resolution Low temporal resolutio...
In high resolution fMRI, therefore, the laminar profiles can potentially be affected by remote pial vessels, which can influence the signal changes in 3D space. It is important to note that the magnitude of the blooming effect depends on the spatial resolution of the voxels. Thus, the blooming...
fMRI can reveal brain areas activated with these processes. Due to absence of radiation, high spatial resolution, and moderately high temporal resolution, fMRI is replacing PET for functional brain imaging.Principles of fMRI fMRI is based on the concept of Blood Oxygen Level Dependent (BOLD) ...
例如,一种基于ICA的联合方法融合了多模态EEG和fMRI数据,可以在没有ERP振幅或相位的先验信息情况下将单试次EEG和fMRI结合起来。在这种方法中,单试次EEG响应和fMRI响应可以合并到一个矩阵中,并进行联合时空分解。另一种方法是使用ICA源来融合EEG+fMRI数据。该方法还结合了约束和基于滞后的信号分解方法来演示电生理信号...
(2002)12. Liu, Z.M., He, B.: FMRI-EEG integrated cortical source imaging by use of time-variant spatial constraints. NeuroImage. 39(3), 1198–1214 (2008)13. Poudel, G.R., Innes, C.R.H., Jones, R.D.: Distinct neural correlates of time-on-task and transient errors during a ...
This chapter explores some of the challenges of functional magnetic resonance imaging (fMRI). In particular, the constraints encountered in terms of spatial and temporal resolution and the factors that limit the ability of MRI to detect functional activa
High-temporal resolution functional PET/MRI reveals coupling between human metabolic and hemodynamic brain response Andreas Hahn Murray B. Reed Rupert Lanzenberger European Journal of Nuclear Medicine and Molecular Imaging (2024) Individual brain regulation as learned via neurofeedback is related to af...