Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6040653 | NeuroImage | 2007 | 14 Pages |
Abstract
Thus, the PSF of the hyper-oxygenated BOLD response in human gray matter is narrower than that reported at 1.5Â T, where macro-vessels dominate the mapping signals. The initial phase of this response is more spatially specific than later phases. Data acquisition methods that suppress macro-vascular signals should increase the spatial specificity of BOLD fMRI. The choice of optimal stimulus duration represents a trade-off between the spatial specificity and the overhead associated with short stimulus duration.
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Authors
Amir Shmuel, Essa Yacoub, Denis Chaimow, Nikos K. Logothetis, Kamil Ugurbil,