Recording multiple responses before stimulus terminates

[David McFarlane]

Leslie,

I can't quite follow all the detail below, but here is a thought.  In 
short, as I understand it your movie completes its Duration even 
after a given pair of button presses should terminate it.  First 
question, are you sure that you have the inline code running during 
the movie?  I.e., do you have the movie Duration set to 0 (with 
StopAfter of No), or PreRelease = Duration?  Second, when your inline 
code detects the required pair of responses, does it issue the 
appropriate command to terminate the movie (Movie.Stop, or 
Movie.Terminate, you will have to look that up)?  Note that 
terminating the MovieDisplay object that plays the movie is *not* the 
same as terminating the playback of the movie, so you might have to 
look into that.

Finally, of course, you can always ask PST's trained staff at 
http://support.pstnet.com/e%2Dprime/support/login.asp , they strive 
to respond to all requests in 24-48 hours.  And if you do get an 
answer from PST staff, please extend the courtesy of posting their 
reply back here for the sake of others.

-- David McFarlane


At 2/20/2012 07:01 PM Monday, you wrote:
>Hi all,
>
>I am attempting to make a habituation paradigm with E-Prime. In order
>to do so, I need to log multiple responses. Using the samples from E-
>Primes website I have my program recording multiple responses and
>recording button presses and releases. What I need E-Prime to do is
>calculate the difference between a button press "N" and release "{-
>N}"and terminate the presentation of a movie display when the time
>after N is pressed is >= 2000 ms.
>
>I have had the program record the multiple responses and stop cycling
>the video when the difference between two responses is > 2000 ms, but
>it does not stop until the end of the video. I need it to terminate
>during the video! When the max count = 2, then the video will stop
>after 2 consecutive seconds. However, infants will look to/away from
>the screen multiple times, so I need to record multiple responses.
>
>My guess is that the problem is occuring because the responses are not
>logged until the max count is reached. How can I tell E-Prime to log/
>use responses prior to reaching the max count?
>
>Here's my code so far:
>
>
>         Dim theResponseObject As RteRunnableInputObject
>         Set theResponseObject =
>CRteRunnableInputObject(Rte.GetObject("Fam1Video"))
>
>         'Counter variable for the number of responses made
>         Dim nPressCount As Long
>
>         'Counter variable
>         Dim nIndex as Integer
>
>         'Enumerate through the response collection
>         'If any of the responses were made by the keyboard, display
>         'the statistics to the user.
>         For nIndex = 1 To theResponseObject.InputMasks.Responses.Count
>
>                 'Set theKeyboardResponseData equal to the current 
> keyboard response
>                 Dim theKeyboardResponseData As KeyboardResponseData
>                 Set theKeyboardResponseData =
>CKeyboardResponseData(theResponseObject.InputMasks.Responses(nIndex))
>                 If Not theKeyboardResponseData Is Nothing Then
>
>                         'Log reaction time and response for each key press.
>                         c.SetAttrib "KeyPress" & nIndex & "RT", 
> theKeyboardResponseData.RT
>                         c.SetAttrib "KeyPress" & nIndex & "RESP",
>theKeyboardResponseData.RESP
>
>         End if
>         next 'nIndex
>
>         For nIndex = 2 to theResponseObject.InputMasks.Responses.Count
>         If c.GetAttrib("KeyPress" & nIndex & "RT") - c.GetAttrib("KeyPress"
>& nIndex-1 & "RT") > 2000 Then Familiarization1.Terminate
>         Next
>
>Thank you,
>Leslie Rollins

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