An Introduction to Normalization and Calibration Methods in Functional MRI

Autor/inn/en	Liu, Thomas T.; Glover, Gary H.; Mueller, Bryon A.; Greve, Douglas N.; Brown, Gregory G.
Titel	An Introduction to Normalization and Calibration Methods in Functional MRI
Quelle	In: Psychometrika, 78 (2013) 2, S.308-321 (14 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0033-3123
DOI	10.1007/s11336-012-9309-x
Schlagwörter	Brain; Diagnostic Tests; Neurology; Metabolism; Human Body; Accuracy; Measurement + Suchen Sie Ihr Suchwort? Gehirn; Diagnostic test; Diagnostischer Test; Neurologie; Stoffwechsel; Menschlicher Körper; Messverfahren
Abstract	In functional magnetic resonance imaging (fMRI), the blood oxygenation level dependent (BOLD) signal is often interpreted as a measure of neural activity. However, because the BOLD signal reflects the complex interplay of neural, vascular, and metabolic processes, such an interpretation is not always valid. There is growing evidence that changes in the baseline neurovascular state can result in significant modulations of the BOLD signal that are independent of changes in neural activity. This paper introduces some of the normalization and calibration methods that have been proposed for making the BOLD signal a more accurate reflection of underlying brain activity for human fMRI studies. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10