I was reading over the code for Psychophysiological Interactions.
My understanding of the process is the the timeseries from a VOI is deconvolved to get an estimate of the underlying neural activity (xn), which makes sense; however, xn is then detrended. I was wondering why the neural activity (xn) is detrended since convolution/deconvolution results differ depending on whether the data is detrended or not.
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Best Regards, Donald McLaren
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D.G. McLaren
University of Wisconsin - Madison
Neuroscience Training Program
Office: (608) 265-9672
Lab: (608) 256-1901 ext 12914
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