Hi,
I have 202 volumes of spiral in/out data with TR=2s. i ran melodic on this
data. According to the previous mail in this topic, the highest freq that
can be represented corresponds to 101 cycles. Ive 8 blocks i.e 8 cycles, so
the 8th value in the text file should have a large value for the
component corresponding to my expt., which i do get in many
components. However in atleast 2 components( this is true in other
datasets as well) i get a peak at 0.15hz(~60cycles in 404s). Is this
the peak corresponding to respiration? Also, since my sampling
frequency is 0.5Hz(corresponds to 202 cycles in 404s), and the
cardiac pulsation being much more than that, will i see the peak at
the aliased frequency or will it not be shown at all? Ive uploaded the
times series ,power spectrum and the ICmap of the 0.15Hz.The upload id is 749962
Thanks
-Vish
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