Spatial and Spectral Components of the BOLD Global Signal in Rat Resting-State Functional MRI.
Nmachi AnumbaEric MaltbieWen-Ju PanTheodore J LaGrowNan XuShella D KeilholzPublished in: Magnetic resonance in medicine (2023)
These results show that the global signal is distinct from the noise contained in the tissue signal, as support for a neural contribution. This study provides a unique perspective to the contents of the global signal and their origins.