We didn't have the "professional" screen during one session, so we
build up a screen with simple tubes bought in bricolage stores. The
screen was created by calc white paper (used by engineers in past
times). It's not an amazing screen but does the job very well... and
costs much less than $1000.
Dorian.
2008/12/1 Kingsley, Peter <[log in to unmask]>:
> Gonzalo:
>
> In the past we used a laptop, a projector, and a special screen to
> project visual stimuli into an MRI scan room from the operator's
> console. It is not free (the screen cost ~$1000), but is not too
> expensive, especially if you have a laptop and can borrow a projector
> from your A/V department. The images become blurred a bit after being
> projected through the shielded window, but it is still easy to see large
> text and objects. We used this for a go-no-go task, and have not used
> it to stimulate the visual cortex, so I don't know how well it would
> work for that. We had to manually trigger the paradigm and scanner
> simultaneously to synchronize the paradigm to the images. I can send
> you more details off-list if you want.
>
>
> -----
> Peter B. Kingsley, PhD, MRI Physicist [log in to unmask]
> Department of Radiology / MRI
> North Shore University Hospital
> 300 Community Drive, Manhasset, NY 11030, USA
> Tel (516) 562-2842 Fax (516) 562-3561
>
>
> -----Original Message-----
> From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]]
> On Behalf Of Gonzalo Rojas
> Sent: Friday, November 28, 2008 10:00 PM
> To: [log in to unmask]
> Subject: [SPM] cheap visual fmri ...
>
>
> Hi:
>
> How can I do a cheap visual fMRI ?... I ask it because we don't have
> the money to buy special glasses for visual fMRI, and for that reason we
> want to do it using a special cheap stimulus method... Do you have the
> information for any cheap method ?... Could you please send me it ?...
>
> Sincerely,
>
>
> Gonzalo Rojas Costa
>
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