2) HOGE RD. Stimulus-Dependent BOLD and Perfusion Dynamics in Human V1. Neuroimage. (1999) vol.9, no.6 Pt 1, p.573-585.
3) JANZ C. Comparison of the Hemodynamic Response to Different Visual Stimuli in Single-Event and Block Stimulation fMRI Experiments. J Magn Reson Imaging. (2000) vol.12, no.5, p.708-714.