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Methods

We consider three different datasets, all taken using echo planar images (EPI) acquired using a 3 Tesla system with TR=3 seconds, time to echo (TE) = 30ms, in-plane resolution 4mm and slice thickness 7mm. The datasets represent three different types of experimental design: a boxcar design, a well-spaced jittered single-events design, and a randomised single-events design. In all cases, the first 4 scans were removed and the data was motion corrected using MCFLIRT (31) and high-pass filtered as described in (43). The data is not spatially smoothed. The three different datasets are as follows.

Subsections