Data Logging Problem

[David McFarlane]

Ariene,

I take it that you want to record a response to VideoSlide, and you 
want to allow a response to take place any time during either 
VideoSlide or ResponseSlide, but no later.  Is that right?  What 
Durations do you use for VideoSlide & ResponseSlide?  Repeating 
JoAnn's question, what Time Limit and End Action do you use for the 
input mask on VideoSlide?  How many input masks do you have on 
VideoSlide?  What PreRelease do you use on ResponseSlide (PreRelease 
for VideoSlide should not matter)?  When you give your failed test 
responses, what stimulus is running at the time of response?  How 
many ms after the onset of VideoSlide do you give those failed 
responses (you could roughly measure that with a stopwatch)?

Oh, and what verion of E-Prime do you use?  And what device do you 
use for getting responses?  Any possibility of intermittent failures 
in your response hardware?

-- David McFarlane


At 10/2/2014 12:25 PM Thursday, JoAnn Silkes wrote:
>What are the Time Limit and End Action for your stimulus clips? If 
>you don't want a response to terminate the video, your Time Limit 
>(under Duration/Input) should be set for as long as you want it to 
>be recorded, and End Action should be set to "none". So, for 
>instance, I have a protocol in which I want a response to be 
>recorded any time up to 4000 ms after presentation, but the duration 
>of the stimulus is only 3000 ms, so I've set the Time Limit to 4000, 
>which allows it to record for that extra 1000 ms.
>
>JoAnn.
>
>
>
>On Thursday, October 2, 2014 8:16:53 AM UTC-7, Ariene Caloia wrote:
>Dear David, JoAnn & David,
>
>Thank you all very much for your responses. I apologise for the 
>delay in getting back to you, I was out of office yesterday.
>
>The experiment is a reaction time task that will be used with fMRI, 
>the video clips are of moves in sport, and participants are required 
>to respond to how they believe play is progressing. Session proc is 
>structured as 'TextDisplay3, InLine1, Welcome, TextDisplay 2, 
>blockproc (TextDisplay1, VideoSlide, ResponseSlide), Endslide'.
>My pre-release setting is 0, Input Masks End Action set to None
>VideoSlide.RTTime, VideoSlide.RT & VideoSlide.ACC = 0, 
>VideoSlide.CRESP & VideoSlide.RESP = blank
>
>As it is a reaction time task it is quite important that response 
>data is logged all throughout the stimulus, and a little beyond too. 
>And I do not want to terminate the clip once a response is made as I 
>wish to record brain activity through the entirety of the video. In 
>my testing, having purposefully responded AFTER the stimulus clip, 
>I'm consistently finding some are being recorded and some are not, 
>but I have not seen any consistency as to specifically which ones 
>are and which are not recorded.
>
>It seems odd to me that the program should not allow me to measure a 
>response beyond the stimulus without terminating the video for a 
>reaction time task...I could record the reaction time manually 
>whilst the participant is in the scanner, but this is not ideal. 
>Therefore would be very grateful if anyone has any further suggestions!
>
>Thank you again, your time and help is greatly appreciated!
>
>Best,
>
>Ariene

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