I am interested in the frequency distribution and power of neural alpha waves (8-12Hz), and have been using WT to examine them. I am quite new to the techniques involved, however, and have noticed another command in the library I am using that processes the CSD of a signal using a morlet wavelet. This CSD command gives me the option to specify a frequency of interest.
Is the output of the CSD command, a spectral density, equivalent in value to the output of a WT for this application? Would it acceptable to use FFT to determine a peak alpha frequency for a subject's brain region, and only calculate the spectral density for that frequency? It seems like this solution would be faster than running complete WTs.
Thank you, and apologies if this question is dumb.