- #1
kaushik200
- 5
- 0
Hello,
I need to calculate the correlation betweeen a pair of eeg signals in various bands (delta, theta, alpha...). Before I do so, I am filtering out frequencies below 0.5 Hz. (and also notching out 50 Hz.) I wonder whether the phase changes introduced by these filtering operations would affect my correlation coefficient. If yes, what kind of filter should I use? My prime objective is to study the correlation between different electrode pairs and I am concerned about these values getting affected by pre-processing.
Kaushik
I need to calculate the correlation betweeen a pair of eeg signals in various bands (delta, theta, alpha...). Before I do so, I am filtering out frequencies below 0.5 Hz. (and also notching out 50 Hz.) I wonder whether the phase changes introduced by these filtering operations would affect my correlation coefficient. If yes, what kind of filter should I use? My prime objective is to study the correlation between different electrode pairs and I am concerned about these values getting affected by pre-processing.
Kaushik