How and why to add random inter trial intervals?

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darvish_sam
Posts: 18
Joined: 02 May 2012, 21:29

How and why to add random inter trial intervals?

Post by darvish_sam » 31 Mar 2014, 23:25

Dear all,

Could you please let me know:

1- How to add inter trial intervals with random duration of 500-2500 ms between consecutive motor imagery trials?

2-What is the main reason of adding this random duration of ITI between MI trials? (Actually I have googled it but no clear response was found except that it is needed to refrain the subject from guessing next stimulus. But when with randomizing the order of stimulus presentation and considering the non-phase locked attribute of sensorimotor rhythms I don not totally understand the underlying reason).

Thank you for you time in advance,
Sam

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