<div dir="ltr">Hi Giulia,<div><br></div><div>Did you figure out why the gazedata file shows time durations for your slides that are different than the ones you set up on e-prime? I'm having the same problem, for example, I have a slide set up to last for 1000ms and gazedata shows that it lasts for about 2200ms...</div><div><br></div><div>Thank you!!<br><br>On Thursday, June 17, 2010 2:45:39 PM UTC-7, grighi wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">Hi David
<br>
<br>unfortunately the PST staff is a bit too overwhelmed and i was hoping
<br>to figure out what may be happening more quickly.
<br>
<br>In answer to your question, the slide showing duration issues is the
<br>last one in a trial and is followed by a user operated break before
<br>the beginning of the next trial.
<br>
<br>The other thing that is very puzzling to me is that if i go and look
<br>in the gazedata file which writes out a line of data for each 17ms
<br>time point (we are using a 60Hz eyetracker) the program thinks that
<br>the duration os this slide is 5 seconds, when in fact we have timed it
<br>and it stays on the screen between 8 and 10 seconds.
<br>
<br>thanks again
<br>giulia
<br>
<br>
<br>On Jun 15, 2:58 pm, David McFarlane <<a>mcfar...@msu.edu</a>> wrote:
<br>> Giulia,
<br>>
<br>> Stock reminder: 1) I do not work for PST. 2) PST's trained staff
<br>> takes any and all questions athttp://<a href="http://support.pstnet.com/e%2Dprime/support/login.asp" target="_blank" onmousedown="this.href='http://www.google.com/url?q\75http%3A%2F%2Fsupport.pstnet.com%2Fe%252Dprime%2Fsupport%2Flogin.asp\46sa\75D\46sntz\0751\46usg\75AFQjCNGivKXvQfxYcucJztVk4KS8DCk8jQ';return true;" onclick="this.href='http://www.google.com/url?q\75http%3A%2F%2Fsupport.pstnet.com%2Fe%252Dprime%2Fsupport%2Flogin.asp\46sa\75D\46sntz\0751\46usg\75AFQjCNGivKXvQfxYcucJztVk4KS8DCk8jQ';return true;">support.pstnet.com/e%<wbr>2Dprime/support/login.asp</a>, and they
<br>> strive to respond to all requests in 24-48 hours (although current
<br>> estimates are more like 10 days) -- this is pretty much their
<br>> substitute for proper documentation, so make full use of it. 3) If
<br>> you do get an answer from PST Web Support, please extend the courtesy
<br>> of posting their reply back here for the sake of others.
<br>>
<br>> That said, here is my take...
<br>>
<br>> Hmm, that is a new one. Are you sure that you do not have two of
<br>> those Slides in a row, or end the trial with that Slide and then
<br>> start the next Trial with the same Slide? That's all I can come up
<br>> with based on the description.
<br>>
<br>> -- David McFarlane, Professional Faultfinder
<br>>
<br>> At 6/14/2010 05:03 PM Monday, you wrote:
<br>>
<br>>
<br>>
<br>> >i am sorry to bug you with what may be a trivial problem, but i am
<br>> >really not sure how to fix it.
<br>>
<br>> >I have an experiment programmed in Eprime and running concurrenlty
<br>> >with Tobii Studio, using the tobii studion extensions for Eprime. Note
<br>> >that this paradigm is meant to be used with infants
<br>>
<br>> >The paradigm is composed of two main parts. In the first part the
<br>> >subject is shown a series of short videos that serve the function of
<br>> >attention getters followed by a slide that contains two faces. Within
<br>> >that slide we have defined a gaze contingent zone, in order to have
<br>> >the infants look at the faces for 10 seconds. This first part all
<br>> >seems to run fine.
<br>>
<br>> >However some timing problems arise in the second part. In the second
<br>> >part the infant is exposed to 8 trials that have the following
<br>> >structure: a short video is presented to get their attention, followed
<br>> >by a face (a familiarization stimulus) that is set up to be gaze
<br>> >contingent so that all the infants will look at it for the same amount
<br>> >of time. The face is followed by another short video, which is
<br>> >followed by a test trial, which is a slide containing two faces side
<br>> >by side. This slide is up for 5 seconds, and is the followed by
<br>> >another short video. The problem arise on the final slide in each
<br>> >trials which follows this last video and contains two more faces. This
<br>> >slide is set up identically to the one occurring above. However,
<br>> >instead of remaining on the screen for only 5 seconds, which is the
<br>> >time indicated in the settings, it appears to remain on the screen for
<br>> >twice that amount. This appears to be true regardless of the provided
<br>> >durations, such that 2 seconds turn into 4 and so on.
<br>>
<br>> >Any suggestions on what may be happening?
<br>>
<br>> >thank you
<br>>
<br>> >giulia
<br>>
<br>> >Children's Hospital Boston
<br>> >Laboratories of Cognitive Neuroscience</blockquote></div></div>
<p></p>
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