How to combine multiple files using OS for PSD analysis

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1
  • MNE version: 0.24.0
  • operating system: macOS 14
directory = '/Users/cinthia/UO/Coding/PD_offmeds'
for dirpath, dirnames, filenames in os.walk(directory):
    for filename in filenames:
        if filename.endswith('.fif'):
            with open(os.path.join(dirpath, filename)) as f:
                print(f.read())

Hi everyone, I’m trying to load multiple eeg .fif files to my code so I can further analyze them all without having to code for all of them separately. I am trying out this code but I get this error:

UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xff in position 33: invalid start byte

Does anyone know what the problem is or if there is any other, easier, way to upload all my files for further analysis?

2

You cannot read FIFF files with a simple text file handle. Instead, you should use mne.io.read_raw_fif().

Also, please make sure to use the latest MNE version (which is currently 1.6.1; you’re still using 0.24, which is over two years old).

1 Like
3

You could instead do something like:

from pathlib import Path

directory = Path("/Users/cinthia/UO/Coding/PD_offmeds")
raw_paths = directory.rglob("*.fif")

for raw_path in raw_paths:
    raw = mne.io.read_raw(raw_path)
    ...

Best wishes,
Richard

1 Like