Aberrant hemodynamic responses in autism: Implications for resting state fMRI functional connectivity studies
Functional MRI (fMRI) is modeled as a convolution of the hemodynamic response function (HRF) and an unmeasured latent neural signal.However, HRF itself is variable across brain regions and subjects.This variability is induced by both neural and non-neural factors.Aberrations in underlying neurochemical mechanisms, which control HRF shape, have been