[FieldTrip] importing data from blackrock

[André Bastos]

Hey JM,

I just handed Andreas some code to read in the data to MATLAB using the
openNSx.m (for importing continuous raw data) and openNEV (for spikes and
event codes), and then a Fieldtrip data structure can be created by hand
relative to events of interest or for the whole length of the session.

I know this is probably not the ideal solution from a FT development point
of view, but it's working for us which means also limited urgency to change.

I would be able to eventually work towards a more aesthetically pleasing
solution, especially if Andreas can help!

Cheers,
Andre


On Tue, Feb 2, 2016 at 1:55 AM, Schoffelen, J.M. (Jan Mathijs) <
jan.schoffelen at donders.ru.nl> wrote:

> Hi Andreas,
>
> At this moment the code that uses the NPMK toolbox for fileio is not yet
> functional. I have started working on this a bit, but did not have time
> (and urgency) to complete this yet.
> The neuroshare code is based on very outdated (windows support only)
> mex-code, and it does not surprise me that it does not work for you.
>
> If you specify ‘headerformat’ and ‘dataformat’ to be ‘blackrock_nsx’ the
> code should take the correct turn, and end up at a portion of the m-file
> that is calling the NPMK functions.
> However, you will hit a keyboard statement right away, so you would need
> to provide some additional code, that is reformatting the output of the
> lower-level NPMK function into the shape that FieldTrip can work with. I
> think you could get some inspiration from the documentation about the
> support for different data formats as well as some examples from the
> various dataformats as implemented in ft_read_data. If you can provide me
> with some functional code, I will be happy to plug it into the release
> version of FieldTrip. I also suggest you to create an account on our
> bugzilla server: bugzilla.fieldtriptoolbox.org, and assign yourself to
> the CC-list of bug 2964. Any progress you make, code suggestions, as well
> as questions regarding to the implementation of this dataformat can be
> posted here.
>
> Since I don’t have dedicated time to work on this right now, the easiest
> way forward would be if you investigate a bit more yourself and come up
> with good suggestions. This will expedite the process greatly.
>
> Thanks, and best wishes,
>
> Jan-Mathijs
>
>
>
> On Feb 1, 2016, at 11:36 PM, Andreas Gerhard Wutz <andreas.wutz-1 at unitn.it>
> wrote:
>
> Dear Fieldtrip community,
>
> I am trying to read in LFP data from a blackrock system. I started out
> with the sample code provided here:
> http://www.fieldtriptoolbox.org/getting_started/blackrock
>
> I use Windows 7 (64-bit), Matlab 2011b (32-bit), downloaded and installed
> the latest version of Fieldtrip (20160128) and of the NPMK toolbox.
>
> Unfortunately, I didn't come very far.
> Here is my code:
>
> filename = 'my_data.ns2';
> data = ft_read_data(filename, 'headerformat', 'neuroshare');
>
> Immediately exits with the following error message:
> "Invalid MEX-file" pointing to
> "fieldtrip/external/neuroshare/mexprog.dll": The specified procedure could
> not be found.
>
> Error in ns_SetLibrary (line 39)
> Error in read_neuroshare (line 82)
> Error in ft_read_header (line 2056)
> Error in ft_read_data (line 197)
>
> What options do I have to get this going?
> Thank you very much for your help.
> Best,
> Andreas
>
>
>
>
>
>
>
> --
> Andreas Wutz, PhD
> Post-doctoral researcher
> Center for Mind/Brain Sciences (CiMeC)
> University of Trento
> Rovereto, Italy
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