rt timing

[scienceisbeauty]

Doing an n-back task.

For where there is no, n-back:If the participant does nothing that is correct, if the participant hits spacebar, that is incorrect.

For where there is an n-back: If the participant hits spacebar that is correct, if the participant hits nothing, that is incorrect.

For both of these, there is a limit of 500 ms to make a decision.
People keep talking about the max min thing. I don't understand. This is all new to me.

Ok, so I need help like this -
Stim ; Loc ;Time ; Stim ;Loc ;Time
~4 0,0,1 rt:57,-1 ~4 0,0,1 rt:57,-1

The above only goes to the next number (within the same trial) when the spacebar is hit. But I'm trying to give it two options, to go to the next number when the spacebar is hit or when nothing is hit for 500 ms.

Similarily if I put rt:-1,57 in the time colum, then it goes immediately to the next number. I'm so so confused.

I know Jarvis24 is such a helpful person. I'm just blah at this. Whenever I have rt:57,-1 it doesn't go on to the next thing unless I press spacebar. I want it to go on even if I don't press it provided I don't press it within 500 ms. However when I do rt:57,-1 it doesn't do anything unless I press spacebar. Isn't ',' supposed to represent OR?