[Eeglablist] Time-frequency

[Dr. Kecskés Miklós]

Dear All,

I'm relatively new to EEGlab and I would have a question about time frequency decomposition. I would like to plot time frequency heat map of a continuous (5-10 min) LFP data, recorded from mouse hippocampus during epileptic seizure. I found the tutorial in the eeglab website,( https://urldefense.proofpoint.com/v2/url?u=https-3A__eeglab.org_tutorials_08-5FPlot-5Fdata_Time-2DFrequency-5Fdecomposition.html&d=DwIFAw&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=6JW0fnq-YW1cMag5nFbmoiGuDq3CxAWGCsRo7Mq-iH18BqGHlK1tJwpQ6IFytY6U&s=CIKPkj6m2fALcaGW0WL0BR5-jDNKFWfj2UGuKX4zp5E&e=  ) but that one is for epoched data however my recordings are continuous LFP signals from epileptic mice. If I do exactly the same as they describe it in the tutorial I get a time frequency map but that map obviously not representing my recordings. Somewhere in this 5-10 min recordings I have electrographic seizure with high amplitude high frequency oscillations however the heat map looks rather homogeneous during the entire time. I tried to play around with the settings, but nothing really helped. Do you have any suggestion how to solve this issue?

Thanks in advance:

Miklos Kecskes Ph.D.
Institute of Physiology
Medical School, University of Pécs
Pécs, Szigeti Street 12.
Szentágothai Research Centre
Pécs, Ifjúság street 20.
H-7624, Hungary

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