Hello,
I am trying to use the optseq command for 2 conditions of 30 trials each with TR = 2
optseq -ntp 120 -TR 2 -npercond 30 30 -tpercond 3 3 -nsessions 3 -label critical independent -o TestFile
I get the following result: -0.000 1 3.000 critical 4.000 1 3.000 critical 8.000 0 2.000 independent
The program adds an extra 1 second at the end of each trial. I want each trial dureation as 3 seconds. This is the true even when when I don't give the option -TR. ( I am assuming the default TR is taken as 2 by the program). I guess the program tries to start to each trial at mutiples of TR. Is this true?
I want my trials not to have any intervals between trials. I get my desired results by "lying" to the program that the TR is 1.
"optseq -ntp 180 -TR 1 -npercond 30 30 -tpercond 3 3 -nsessions 3 -label critical independent -o TestFile" gives the results as:
-0.000 1 3.000 critical 3.000 1 3.000 critical 6.000 1 3.000 independent
Is this the right way to go?
Thanks. Mithra.