Hi, I am having problems with setting up high pass filter in 1st level feat. (1) The value of high pass filter will change depending on how many times I press the estimation button, weird… (2) Is it always accurate if I just use the value from "cutoffcalc -i design.mat" ? (3) Can I calculate the high pass filter manually? I got 7 types of blocks (1-7) with resting block in between (r)and a random order, so the order is: r 7 r 1 r 2 r 3 r 4 r 5 r 6 r 1 r 5 r 6 r 4 r 7 r 3 r 2 r 2 r 4 r 7 r 3 r 2 r 2 r 4 r 5 r 7 r 1 r 6 r 3 So I guess the high pass filter is the length of all these (r 7 r 1 r 2 r 3 r 4 r 5 r 6 r 1 r 5 r 6 r 4 r 7 r 3 r 2 r 2 r 4 r 7 r 3 r 2 r 2 r 4 r 5 r 7 r 1 r 6 r 3) ??