Dear Deryk,
This problem sounds familiar. If I'm right this is a case of buggy
data rather than buggy SPM code. The problem comes down to some
missing closing bracket in the .hc files (these are ASCII files in
your .ds directory). I don't remember the details but perhaps if you
examine the files you'll figure it out yourself. This problem is
present in some CTF systems with some particular version of CTF
software. Since we used CTF toolbox that we prefer not modify and this
toolbox generates the error the solution is to fix your .hc file with
a text editor and then try again.
If this is not enough for you to solve the problem, write again and
I'll try to find out more details about what you should fix.
Best,
Vladimir
On Thu, Mar 19, 2009 at 8:47 PM, Deryk Beal <[log in to unmask]> wrote:
>
> Hello
>
> I receive similar errors regardless of options entered when trying to
> convert MEG data from a CTF-151 unit using SPM8b. I have read the manual and
> I have tried various options within the convert gui but the error messages
> are usually similar to the example below (taken from the Just Read option).
> I am pointing the convert gui to the .meg4 file. The errors output are as
> follows:
>
> SPM8b: spm_eeg_convert_ui (v2850) 16:41:02 - 19/03/2009
> ========================================================================
> readCPersist: Stop strings (EndOfParameters) do not balance start strings
> (WS1_).
> (No. of start strings)-(No. of stop strings)=1.
> ??? Index exceeds matrix dimensions.
>
> Error in ==> C:\Program Files\MATLAB71\spm8b\external\ctf\readCTFds.p>readHc
> at 599
>
>
> Error in ==> C:\Program
> Files\MATLAB71\spm8b\external\ctf\readCTFds.p>readCTFds at 203
>
>
> Error in ==> fileio\private\read_header at 673
> orig = readCTFds(filename);
>
> Error in ==> fileio_read_header at 11
> [varargout{1:nargout}] = funhandle(varargin{:});
>
> Error in ==> spm_eeg_convert at 70
> hdr = fileio_read_header(S.dataset, 'fallback', 'biosig', 'headerformat',
> S.inputformat);
>
> Error in ==> spm_eeg_convert_ui at 89
> D = spm_eeg_convert(S);
>
> ??? Error while evaluating uicontrol Callback.
>
> Is there a solution? What am I doing wrong?
>
> Thanks & cheers,
>
> Deryk
>
>
> Deryk Beal, M.HSc., S-LP(C), Reg. CASLPO
> Speech-Language Pathologist
> Doctoral Candidate
> [log in to unmask]
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