Dear efMRI-experts,
here is my latest heartbreaker: I want to transpose an EKP-paradigm into
the scanner. Currently, it runs with an SOA=2s, ISI=1.5s on 192 events
of looking at visual objects and 22 events of reading sentences (SOA=3s,
ISI=1.5s) which are to focus attention by obedience. Visual objects
consist of 4 faces (2 male, 2 female) each expressing happiness, sadness
and no particular emotion (=3 "emotions") eight times (i.e. 96 facial
recognition task events). At 96 occasions (events), the individual has
to recognize visual objects which arenīt faces but buildings. Does this
per se sound like a sensible efMRI-paradigm? What would people suggest
to build a reasonably powerful design matrix? I have noticed that SPM99
features to suggest a matrix for a paradigm but I do not know how to
persuade it...
TIA-
andreas
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