Make spectrogram of LFP using chronux package
8 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Selena
am 4 Jul. 2022
Kommentiert: Bjorn Gustavsson
am 5 Jul. 2022
Hello! I am trying to get a spectrogram of some LFP signals using the chronux package.
My current code is:
[S,t,f] = chronux.ct.mtspecgramc(data, [.4 .0005], params);
S = 10*log10(S);
imagesc(t,f,S)
Because the data is sleep LFP, I should be getting a spectrogram with red on the bottom throughout, but instead, it's looking like this:
Does anyone know what I am doing incorrectly?
0 Kommentare
Akzeptierte Antwort
Bjorn Gustavsson
am 5 Jul. 2022
From the help of that function you will see that the output S should be:
0050 % S (spectrum in form time x frequency x channels/trials if trialave=0;
0051 % in the form time x frequency if trialave=1)
0052 % t (times)
0053 % f (frequencies)
0054 % Serr (error bars) only for err(1)>=1
Therefore the correcter way of displaying the spectrogram would be:
pcolor(t,f,S.'),shading flat,colorbar,xlabel('time'),ylabel('freq')
HTH
2 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Time-Frequency Analysis finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!