Wiktor Olszowy

Apparent Diffusion Coefficient fMRI shines light on white matter resting-state connectivity as compared to BOLD

This study compares BOLD and ADC-fMRI in functional connectivity, finding ADC-fMRI provides more robust white matter connectivity and higher inter-subject similarity.

Mapping activity and functional organisation of the motor and visual pathways using ADC-fMRI in the human brain

This study compares ADC-fMRI and BOLD-fMRI to show ADC-fMRI provides complementary insights into brain function by detecting neuromorphological activity in white matter and revealing functional organisation of visual pathways.

Evaluating models of the ageing BOLD response

This study evaluates hemodynamic models of the BOLD response across the adult lifespan, finding that three-parameter models and biophysical models like HDM capture age-related changes effectively.

Beyond BOLD: Evidence for diffusion fMRI contrast in the human brain distinct from neurovascular response

This study demonstrates that diffusion fMRI (dfMRI) can detect brain activity contrasts distinct from BOLD, with specific activation maps and resting-state connectivity free from vascular artifacts.

Accurate autocorrelation modeling substantially improves fMRI reliability

This paper compares fMRI analysis packages for autocorrelation modeling, finding AFNI outperforms FSL and SPM, and recommends improved pre-whitening and diagnostics for better reliability.