eeg data format .nsr

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1
  • MNE version: 1.5.0
  • operating system: macOS

Hi, I’m trying to load the eeg data files with format .nsr and I’m using the function: mne.io.read_raw_egi; but I’m unable to load the file. The error is:

/opt/anaconda3/lib/python3.9/site-packages/mne/io/egi/egi.py in __init__(self, input_fname, eog, misc, include, exclude, preload, channel_naming, verbose)
    265             egi_info["new_trigger"] = None
    266         info = _empty_info(egi_info["samp_rate"])
--> 267         my_time = datetime.datetime(
    268             egi_info["year"],
    269             egi_info["month"],

ValueError: month must be in 1..12
2

Hi @vivekdcn and welcome to the MNE forum!

I don’t recognize the .nsr file extension, and it doesn’t appear in a search of EGI’s website. Are you sure the file is from an EGI device? Are you able to share the file so we can inspect it?

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3

Hi,
Thank you.
I’m afraid I cannot share the file. I received this dataset and I was told that subjects were recorded with EGI system. I couldn’t find any information on the nsr format.

4

the .nsr format must be very old. I’ve seen .ns files from EGI, from about 10 years ago. EGI makes a reference to nsr files here, They seem to have created an application to convert .nsr files to .mff files (only available on certain versions of macOS…):

"It is only possible to convert the older .nsr file to the newer .mff format on a computer running Mac OS
10.6.8. To help you transition to working within the MFF environment on current Mac computers, we have created a standalone MFF Converter that will run on Mac OS 10.6.8 without needing Net Station or a HASP license."

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5

I see its an outdated format. Thanks a lot. Seems like the only solution is their technical support.

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