Import single electrode data stored as CSV or ABF or SMR or SMRX or WAV

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1

Hi,

I am wondering how to import single electrode data stored as csv (X and Y values) or ABF or SMR or SMRX or WAV.

I read this:

but could not import the data recorded from Brain slices.

Any suggestion is greatly appreciated.

Thank you.

Best regards,

Jaideep

2

For CSV files, when Review raw file select the type EEG: ASCII text (*.*)

Then you will need to set the options according to the content of the CSV file:

image
image359×288 8.9 KB

For the other formats:

  • (Axon) ABF: proprietary files .abf is not supported in Brainstorm, there are tools to export it as CSV.
  • SMR: These are supported using the the format: EEG: CED Spike2 old 32bit
  • SMRX: These are supported using the the format: EEG: CED Spike2 new 64bit
  • WAV: This is not supported. Is this a standard WAVE file? If so, you can save its contents to a supported format (e.g., CSV, or MAT file) with the Matlab's function readaudio()
3

Many thanks, Raymundo. This is of great help. I could import a file and practice with it. I could not get the Spike sorting working though. I will try again and post a screenshot of the error message if I fail again.

4

Hi Raymundo and others,

I could import and work with a file. I could get the FFT and Spectrogram/Scalogram as well. But the Spike sorting (using Wave Clus) failed. The error message is pasted below. Could you please suggest how to overcome this error.

Many thanks.

Spike Sorting Error_ Screenshot 2025-09-26 235500
Spike Sorting Error_ Screenshot 2025-09-26 235500987×837 157 KB

5

This seems to be related to the elliptic filter that is designed by Wave_clus which uses the default bandwidth of 300 to 3000 Hz. Which means that you sampling frequency must be at least 6000 Hz.

Is it the case that your sampling frequency is less than 6000 Hz?