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Analog/Digital Pepsi Challenge...(long-ish)
In article (Scott Dorsey)
writes:
Jay Kadis wrote:
There is a problem using MRI (or fMRI) with audio cues: you cannot use
dynamic
headphones in or near an MRI machine. Having done some fMRI experiments
using
audio stimuli, it is not possible currently to deliver high quality audio to
a
subject in an MRI machine. It was thought that electrostatic headphones
might
work, but to my knowledge no one has yet succeeded. (Heaphones are
necessary
because the MRI machine itself is very loud.)
Hmm... how about ceramic element headphones, like the old Astatic headphones
for crystal sets?
Electrostatic types would be a lot flatter, though, since the ceramic things
tend to have a lot of narrow resonances.
I doubt we'd be able to settle the analog/digital debate using crystal
headphones.
We also wanted to have rappers scanned to see if they use the speech or
music
areas of their brains, but no one wants to fund such a study. Wonder why?
That would be very interesting. You want to borrow some electrostatic
phones? You'll have to remove the steel frames and make some replacement
for them, but I think they are otherwise mostly nonmagnetic.
--scott
There were some other labs trying the electrostatics but they haven't managed
to get them to work. I'm not sure why. I should follow up on it, but my
involvement in the experiments has been on hold lately.
-Jay
--
x------- Jay Kadis ------- x---- Jay's Attic Studio ----x
x Lecturer, Audio Engineer x Dexter Records x
x CCRMA, Stanford University x http://www.offbeats.com/ x
x-------- http://ccrma-www.stanford.edu/~jay/ ----------x
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