Viewing Image Overlay in EDF files

1
Hi,

I couldnt find an answer to this when looking in the forum so maybe i missed it.

Im recording data in my matlab script and saving them to the EDF file for the particular subject. But when i look at the EDF using Dataviewer i have no image overlay ie: it does not show the text the subject was viewing during the experiment.

I dont know if there is a command or function i should be using in my script. Can anybody help with this?

Thanks

Patrick
2
Hi Patrick,

this is a bit DataViewer specific, so you should try the
manufacturer's support forums.

You can use Screen('GetImage') and imwrite to record stimulus to a
file, and then click the "Change the Overlay Image" button in data
viewer.

I have never tried this, but I guess to automate this, you could try
to create the files in the runtime subdirectory that you get when
using Experiment Builder (i.e., imagelst.dat, images, and
dataviewer/]dataset]/graphics with the *.vcl files).

Best, Jochen

On Jul 20, 2009, at 14:07, hynespm wrote:

> Hi,
>
> I couldnt find an answer to this when looking in the forum so maybe
> i missed it.
>
> Im recording data in my matlab script and saving them to the EDF
> file for the particular subject. But when i look at the EDF using
> Dataviewer i have no image overlay ie: it does not show the text the
> subject was viewing during the experiment.
>
> I dont know if there is a command or function i should be using in
> my script. Can anybody help with this?
>
> Thanks
>
> Patrick
>