Millisecond Forums

Depending on the exact behavior you want, you need to specify the desired /trialduration, /beginresponsetime and/or /responseinterrupt mode for the <trial>.

Example:
<trial mytrial>
/ stimulustimes = [0=a; 1000=b; 3000=c; 4000=d; 5000=e]
/ trialduration = 6000
/ responseinterrupt = frames
/ beginresponsetime = 0
/ validresponse = (57)
</trial>

<text a>
/ items = ("A")
</text>

<text b>
/ items = ("B")
</text>

<text c>
/ items = ("C")
</text>

<text d>
/ items = ("D")
</text>

<text e>
/ items = ("E")
</text>

Thanks!

What is the difference between responseinterrupt = frames and responseinterrupt =trial?

Diane

That's covered in the language reference topic for the /responseinterrupt attribute (reproduced below):

immediate:
Any remaining stimulus presentation frames are aborted when the subject responds, and the stimuli are immediately erased.

frames:
Any remaining frames in the trial are presented before the stimuli are erased.

trial:
Any remaining frames in the trial are presented before the stimuli are erased. Any media stimuli (sound or video) are played to completion before Inquisit advances to the next trial.
 
Remarks
If beginresponseframe is not set to a value to that allows a response during the stimulus presentation sequence, then immediate and frames are functionally equivalent. The default setting is immediate.

Sorry, yes, I read that, but didn't understand it. I should have formulated my question differently: What is meant by "remaining frames"? The trial in your example consists of several text elements that are timed in milliseconds, not frames, so what does "frame" refer to here?

Everything ultimately comes down to display *frames*, that's what your monitor works with. For the purpose of your question, "frames" just means anything that's specified in the <trial> element's /stimulusframes or /stimulustimes attribute.

So in your example setting responseinterrupt to trial or frames has the same effect?

Yes.

Actually, it doesn't seem to work the way I want. Here's my trial:

<trial massedstudy1>
/ stimulustimes = [1=massed1]
/posttrialpause = 500
/trialduration = 3500
/responseinterrupt = frames
/ validresponse = (44,53)
/ correctresponse = (44)
</trial>

I wanted the stimulus (massed1) to remain on the screen for 3000 ms no matter when the response occurs, but setting responseinterrupt to either frames or trial does not do that. Can you suggest another solution?


Thanks
Diane

There is only one frame

/ stimulustimes = [1=massed1]

hence /responseinterrupt = frames will have no effect (there are no further frames to display) and the stimulus will be erased. That's the expected behavior. Note that the trial *will* nevertheless last 3500ms in total.

What you need to do is set massed1's /erase attribute to false.