Hi Chaohui,
of course you can. Kumar et al 2007 used sparse imaging with ca. 4 sec
TR and 8 sec silence.
All the best, Stefan
Kumar S, Stephan KE, Warren JD, Friston KJ, Griffiths TD 2007
Hierarchical Processing of Auditory Objects in Humans. PLoS
Computational Biology 3(6): e100 doi:10.1371/journal.pcbi.0030100
> Dear all,
>
> I would like to carry out an effective connectivity analysis with a
> language paradigm that used auditory stimuli. In order to avoid the
> scanner noise contaminating our stimuli we used a sparse paradigm with
> trial length of 11s (2s for scanning and 9s silence when the auditory
> stimuli were presented). Can I do a DCM with sparse data acquired over
> such long periods?
>
> Many thanks,
> Chaohui
>
>
--
Dr. Stefan Kiebel
Wellcome Trust Centre for Neuroimaging
Institute of Neurology, UCL
12 Queen Square
London WC1N 3BG
Phone: (+44) 20 7833 7478
Fax: (+44) 20 7813 1420
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