Next: Results
Up: Artificial null data
Previous: Artificial null data
We use artificial null data generated from the model, with
and . The stimulus is taken to be a square wave
with period of seconds. We have scans, a TR of
seconds and use an HRF resolution of . Using these values
we generate time-series for voxels. We then fit the model
with an autoregressive order of and use a basis set of the
top 3 eigenHRFs shown in figure 3. We use two
different models, one with no HRF constraints ( and )
and one with HRF constraints (
and
as
given in equation 17). We use an f-contrast
of
.