I have an event-related design experiment which outputs a file with a line corresponding to every TR.

i.e. for  TR = 1 the  first 3 columns of the file look like:

0 0 1

1 0 1

2 0 1

3 0 1

4 0 1

5 1 1

6 1 1

7 1 1

8 1 1

9 1 1

Assuming I have 5 seconds of fixation followed by seconds of condition 1.

Is this the correct way to format this file?

 or should it have aline for every condition onset such as:

0 0 5

5 1 5

Perhaps, it makes no difference. Please let me know if you have insight into this

Thanks,

Cesar