[Mne_analysis] 4D neuroimaging data?

Wed May 18 12:25:28 EDT 2022

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Thanks for your reply!

The data is from Erlangen, it's sometimes analyzed using MNE. I learnt that
their default setting is to record with EEG, but that this recording was
without EEG. I guess that the error

TypeError: Bad info: info["chs"][281]["loc"] must be ndarray with 12
elements, got None

indicates that MNE is searching for EEG locations that aren't there? I
tried to go through the function arguments of mne.io.read_raw_bti() to see
if I could get MNE to only read MEG sensors (something like "EEG=False")
but I couldn't find anything. What would you suggest?

Best,

Karin

Den sön 8 maj 2022 kl 16:51 skrev Alexandre Gramfort <
alexandre.gramfort at inria.fr>:

>         External Email - Use Caution
>
> hi Karin,
>
> where is the data coming from? Maybe you can ask the site what they use to
> load this file?
>
> Alex
>
>
> On Sun, May 8, 2022 at 10:51 AM Karin Westin <karin.westin85 at gmail.com>
> wrote:
>
>>         External Email - Use Caution
>>
>>  Dear all,
>>
>>
>> I have recently received some 4D neuroimaging MEG data from a different
>> lab (I have previously only worked with Elekta systems so no previous
>> experience of this data format). I’m trying to simply read the raw data
>>
>> (raw = mne.io.read_raw_bti(pdf_fname=pdf_fname, config_fname=config_fname,
>>
>> head_shape_fname=head_shape_fname, verbose=True)
>>
>>
>> but this throws the error
>>
>>
>> TypeError: Bad info: info["chs"][281]["loc"] must be ndarray with 12
>> elements, got None
>>
>>
>> I can’t manage to retrieve any other information about the raw data so I
>> can’t really figure out if there is something wrong with the data file I
>> got, or whether it’s something I can fix myself. I would be very happy for
>> any input!
>>
>>
>> Thanks
>>
>>
>> Karin
>>
>>
>>
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