Reply to Uludag: fMRI "initial dip" reflects increase in oxygenated hemoglobin
نویسندگان
چکیده
منابع مشابه
To dip or not to dip: reconciling optical imaging and fMRI data.
Several optical studies have reported a brief initial increase of deoxyhemoglobin (1), which is consistent with an initial dip observed in the functional MRI (fMRI) signal, evoked by local neuronal activity. This effect is small and not always present (2), but it has stirred great interest because it may reflect a rapid increase of oxidative metabolism before increases in blood flow and, thus, ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2010
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0915004107