Dear SPM,
I'd like to ask if anyone have experience in applying corrected threshold
when they're averaging say, 12 independent dataset.
The problem arise when we're trying to calculate a mean contrast map to
show if there's any activation in doing a specific task. Generally, we'd
like to correct for the blob size, that'd produce different threshold for
different dataset. Although we could threshold each dataset with
individual threshold and averaged the thresholded SPM, we'd like to find
out if it'd be better to correct the blob size after we averaged the
pre-threshold SPM.
Another question is whether the corrected threshold displayed in the
result is the Z value or the t-value (contrast dependent?).
Any feedback/comments is welcomed.
Thanks.
Best,
Kelvin
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