¥ Slow baseline drift (time scale 100 s and longer) makes doing FMRI with long duration stimuli
very difficult
¥ Learning experiment, where the task is done continuously for ~15
minutes and the subject is scanned to find parts of
the brain that adapt
¥ Pharmaceutical challenge, where the subject is given some psychoactive
drug whose action plays out over 10+ minutes
(e.g., cocaine, ethanol)
¥ Very short
duration stimuli that are also very
close in time to each other are
very hard to tell apart, since their HRFs will have
90-95% overlap
¥ Binocular rivalry, where percept switches ~
0.5 s