Dear Rick,

Thank you very much for your answers! Here is an example of one stim_times file of one regressor (neutral pictures) which I created with make_stim_times.py using -tr 1.0:
65.0 66.0 69.0 70.0 86.0 87.0 102.0 103.0 106.0 107.0 109.0 110.0 113.0 114.0 117.0 118.0 124.0 125.0 127.0 128.0 197.0 198.0 204.0 205.0 208.0 209.0 211.0 212.0 223.0 224.0 226.0 227.0 229.0 230.0 232.0 233.0 243.0 244.0
331.0 332.0 334.0 335.0 365.0 366.0 372.0 373.0 376.0 377.0 423.0 424.0 432.0 433.0 478.0 479.0 492.0 493.0 503.0 504.0 547.0 548.0 550.0 551.0 559.0 560.0

In the second run the first neutral picture is presented 331 seconds after the second run started. So this seems right. Is it that what you meant by "...make sure the first and last couple of stimulus times are correct for each run." ?. As my runs are autoconcatenated by 3dDeconvolve I´m wondering now whether the seconds of the second run have to be added to the first run. So, if my first run is 600 seconds,is the correct time point of the second run not 331 but 600+331? Is it that what you meant with your first answer (1.)? Now I don´t know whether I can use this file or whether I have to use one long file (1200 lines) as input for make_stim_times.py. Something I cleary misunderstood.
I´m sorry to bother you again, but I would be really grateful, if you could help me a second time.

Best regards,
Beate