[FieldTrip] Time-frequency analysis

[Kenji Kirihara]

Dear FieldTrip mailing list members,

I am interested in time-frequency analysis of EEG and have 
a question about ft_freqanalysis. I applied ft_freqanalysis to 
my data for time-frequency analysis using wavelets. Power at each 
time-requency point is calculated. However, power at each point 
seems to be too large. For example, power at 4 Hz, 0 ms, O2 is 1218, 
power at 10 Hz is 730, and power at 20 Hz is 94. These values seem 
to be too large compared to power calculated using FFT for frequency 
analysis. I would be grateful if someone tells me why this happens.

Sincerely,

Kenji Kirihara