¥ FMRI Stimulus¨Signal connection
and noise statistics are both poorly characterized
¥ Result: there is no ÒbestÓ way to analyze FMRI time series data:
there are only ÒreasonableÓ analysis methods
¥ To deal with data, must make some
assumptions about the signal and noise
¥ Assumptions will be wrong, but must do something
¥ Different kinds of experiments require
different kinds of analyses
H Since
signal models and questions you ask about the
signal will vary
H It is important to understand what is going on, so
you can select and evaluate ÒreasonableÓ analyses