A Method for the Characterisation of Spatial Structures Observed in Cerebral Fmri Data
نویسندگان
چکیده
Functional Magnetic Resonance Imaging (fMRI) can detect venous concentration changes of deoxygenated hemoglobin. Cerebral blood flow is locally regulated by pre-capillary arteriolar smooth muscles [1]. Consequently, fMRI images inherit the spatial characteristic of localised signal change. In addition, spurious voxels also exhibit significant fluctuations due to instrumental and physiological noise. The superposition of these effects emerge when analysing the images for significant temporal changes.
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تاریخ انتشار 2008