> I'd be curious and happy to have a look!
Thanks, I will put a few of them up.
> I like the idea to use PDFs for display. How do you synchronize it temporally with the scanner? Usually, you don't need to be fancy about it: being precise to 1 TR is quite sufficient for a block design.
The initial synch is done in a "Biological" fashion. ie: press
PageDown/LeftArrow when the scanner reaches steady state and starts
it's bit of counting. Yes this could be done with a TTL pulse^ but I
am going to Ghetto-tech. (ie: $0 fMRI, well ok it cost me $30AUS
rupees to make a screen from Electrical conduit, ball point pen
shafts, string and cheap polyester).
The Auto Advance is a feature in PDF ala this:
http://www.creativetechs.com/iq/build_an_acrobat_pdf_slideshow.html
I just set it to auto advance every "x" seconds and put in repeats of
images if required. Currently I am making the pdf's in OpenOffice so
that again is $0.
The Projection is done with a cheap Projector in a rear-projection
setup. Rather than buying a (more expensive) projector that can flip
the image I am just using a mirror to flip the image in the console
room. Seems to work fine.
a
^ full TTL synch should not be a problem all I would have to do is set
the Pulse to map to PageDown and all would be hunky-dory. Still at
this stage it is just one more thing to go wrong.
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