Dear All,
I have recently been experimenting with a random effects
analysis of several trials in an fMRI study. I have 18 subjects,
so I guess this is the right analysis to use. Basically, I
was wondering whether I should use a corrected height threshold
in the generation of the SPMs? If I do I get no supra-threshold
clusters.
Is it appropriate to use an uncorrected p, given that the
random effects analysis is quite stringent? Is there any
general consensus on the best approach to choosing p-levels
in this situation?
Thanks in advance.
Yours,
Jon.
_____________________________________________________
Jonathan Brooks Ph.D. (Research Fellow)
Magnetic Resonance and Image Analysis Research Centre
University of Liverpool, Pembroke Place, L69 3BX, UK
tel: +44 151 794 5629 fax: +44 151 794 5635
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|