[Mne_analysis] Matlab mne_ex_read_raw indicates missing channel STC 014

[Eric Larson]

'STI 014' is the channel used at MGH to record events, and it gets
saved in the FIF file. Here at UW, it's 'STI101', which can be
adjusted on the command line with mne_process/browse_raw with
"--digtrig 'STI101'". In MATLAB, you'll need to adjust mne_ex_read_raw
to not include 'STI 014' as a channel that is read in. (I think that's
part of the reason it's labeled as "mne_ex_*", because it's not
universally functional, and may need to be adapted by the user.) If
you use the command "raw = fiff_setup_read_raw(fname);"---with a
fclose(raw.fid) once you're done if you're picky---I think the
structure "raw" has a field in it somewhere that has the channel names
that are actually contained in the FIF.

Eric


On Tue, Apr 24, 2012 at 5:22 PM, Jeff Eriksen <eriksenj at ohsu.edu> wrote:
> Still trying to average a single epoch, switching to MNE Matlab routines. I
> believe my FIF file has the event in it, but I do not know where it is
> actually stored. Mne-browse-raw says it is in there. When I try to examine
> it with the Matlab routine to read raw files, it tells me there is no STC
> 014 channel. Should I be concerned? Is there a way for Matlab to access the
> events I think are in my file? Do I need an STC 014 channel?
>
> -Jeff
>
> ******** Matlab console begin
> ********************************************************************************
>
>>> fname = 'A1_ec1_bcm_epc1.fif';
>
>>> [data,times] = mne_ex_read_raw(fname,from,to,in_samples);
>
> Opening raw data file A1_ec1_bcm_epc1.fif...
>
>             Range : 0 ... 899  =      0.000 ...     0.899 secs
>
> Ready.
>
> ??? Error using ==>fiff_pick_channels at 93
>
> Missing channel STI 014
>
>
>
> Error in ==> fiff_pick_types at 94
>
>     sel =
>
>     fiff_pick_channels(info.ch_names,myinclude,exclude);
>
>
>
> Error in ==> mne_ex_read_raw at 81
>
> picks =
>
> fiff_pick_types(raw.info,want_meg,want_eeg,want_stim,include,raw.info.bads);
>
> ******** Matlab console end
> ********************************************************************************
>
>
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