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Human Brain Mapping
Physiological pulsations have been shown to affect the global blood oxygen level dependent (BOLD) signal in human brain. While these pulsations have previously been regarded as noise, recent studies show their potential as biomarkers of brain pathology. We used the extended 5 Hz spectral range of magnetic resonance encephalography (MREG) data to investigate spatial and frequency distributions of physiological BOLD signal sources. Amplitude spectra of the global image signals revealeddoi:10.1002/hbm.25547 pmid:34037278 pmcid:PMC8356994 fatcat:6tgz27ljpjcb3nk5qmbhk5xthi