Time-frequency plot on ASCII (txt) file

Deal All,

I would like to do time frequency analysis on mouse LFP data in a single channel. I was able to convert my raw data into a *.txt file with basically two columns (time+signal) and I can open it and plot it nicely in Brainstorm, however if I would like to make the time frequency analysis the error message say: "invalid input for process". If I follow the corresponding tutorial I can do the analysis on the stimulated signal but not on my data. Any idea what should I change on the raw file?
Thanks

What was the initial file format?
Isn't it a format that you could have read directly in Brainstorm?

If I follow the corresponding tutorial I can do the analysis on the stimulated signal but not on my data. Any idea what should I change on the raw file?

You must import/epoch your data before running time-frequency processes. These are not available for continuous (raw) data.

To get started with Brainstorm, we highly recommend you start by following the introduction tutorials (all the section "Get started" on the Tutorials page), using the example dataset provided. Even if this is not the type of data you want to process, it would teach you how to use the software, and would probably prevent you from wasting time with errors like the one you reported here.

Hi,

The original format is .msrd (MultiChannelsSystems W2100) I did not find this format in Brainstorm. The point is that I would like to visualize epileptic seizures in a 3-5 minutes long recording. How can I epoch the data if there are now repeated stimuli/triggers to use? I read the get started tutorial but did not find the answer to my problem.

You don't need events to import epochs of data into the database, you can select any arbitrary time window.
https://neuroimage.usc.edu/brainstorm/Tutorials/Epoching

I'd recommend you also follow the tutorial "EEG and Epilepsy":
https://neuroimage.usc.edu/brainstorm/Tutorials/Epilepsy#Time-frequency