<div dir="ltr"><div><div>Hi David, <br></div> Thanks for the detailed response!<br><br>Best,<br></div>Zilong<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Aug 19, 2014 at 11:06 AM, David McFarlane <span dir="ltr"><<a href="mailto:mcfarla9@msu.edu" target="_blank">mcfarla9@msu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Zilong,<br>
<br>
1) First and foremost, please thoroughly study the "Critical Timing" chapter in the User's Guide that came with E-Prime.<br>
<br>
2) The RT is relative to the OnsetTime of the E-Object that plays the sound, e.g.,<br>
StimSlide.RT = StimSlide.RTTime - StimSlide.OnsetTime<br>
(do not take my word for that, please look for yourself). Note that the audio hardware may impose additional delays so that actual onset of sound lags even further behind OnsetTime, to test this you would need additional equipment (e.g., oscilloscope or Black Box Toolkit).<br>
<br>
3) Yes, you should be able to trust the RT values even with large OnsetDelay values. But you do well to verify this yourself with external testing equipment as mentioned above.<br>
<br>
Finally, look at <a href="https://groups.google.com/d/topic/e-prime/OeiZ00V9SRc" target="_blank">https://groups.google.com/d/<u></u>topic/e-prime/OeiZ00V9SRc</a> for a discussion of the various time audit measures.<br>
<br>
Best,<br>
-----<br>
David McFarlane<br>
E-Prime training online: <a href="http://psychology.msu.edu/Workshops_Courses/eprime.aspx" target="_blank">http://psychology.msu.edu/<u></u>Workshops_Courses/eprime.aspx</a><br>
Twitter: @EPrimeMaster (<a href="https://twitter.com/EPrimeMaster" target="_blank">https://twitter.com/<u></u>EPrimeMaster</a>)<br>
<br>
/----<br>
Stock reminder: 1) I do not work for PST. 2) You may reach PST's trained staff (and other support facilities) at <a href="https://support.pstnet.com" target="_blank">https://support.pstnet.com</a> . 3) If you do get an answer from PST staff, please extend the courtesy of posting their reply back here for the sake of others.<br>
\----<div><div class="h5"><br>
<br>
<br>
At 8/14/2014 03:34 PM Thursday, Zilong Xie wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi E-Prime experts,<br>
In my experiment, in each trial, I presented a sound and simultaneously collected response to the sound with the slide object. When I checked the edat2 file, I noticed that there was onset delay of about 100 ms (the time scale in the edat2 file is ms, right?) in the slide object. So my questions are:<br>
(1) How can I reduce the onset delay of the slide object?<br>
(2) Is the RT recorded here relative to the actual onset of the sound or the expected onset of the sound?<br>
(3) In the case of large onset delay, can I trust the RT values reported in the edat2 file? And how can I get the actual RT values?<br>
<br>
Thanks!<br>
<br>
best,<br>
Zilong<br>
</blockquote>
<br>
-- <br>
You received this message because you are subscribed to a topic in the Google Groups "E-Prime" group.<br>
To unsubscribe from this topic, visit <a href="https://groups.google.com/d/topic/e-prime/5PGPRnXBl3w/unsubscribe" target="_blank">https://groups.google.com/d/<u></u>topic/e-prime/5PGPRnXBl3w/<u></u>unsubscribe</a>.<br>
To unsubscribe from this group and all its topics, send an email to <a href="mailto:e-prime%2Bunsubscribe@googlegroups.com" target="_blank">e-prime+unsubscribe@<u></u>googlegroups.com</a>.<br>
To post to this group, send email to <a href="mailto:e-prime@googlegroups.com" target="_blank">e-prime@googlegroups.com</a>.<br></div></div>
To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/e-prime/53f3761e.4937320a.5adb.6773SMTPIN_ADDED_MISSING%40gmr-mx.google.com" target="_blank">https://groups.google.com/d/<u></u>msgid/e-prime/53f3761e.<u></u>4937320a.5adb.6773SMTPIN_<u></u>ADDED_MISSING%40gmr-mx.google.<u></u>com</a>.<div class="HOEnZb">
<div class="h5"><br>
For more options, visit <a href="https://groups.google.com/d/optout" target="_blank">https://groups.google.com/d/<u></u>optout</a>.<br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr"><div>Zi-Long Xie (谢子龙)<font color="#c0c0c0" face="Verdana"><br></font></div><div><br></div><div>SoundBrain Lab,</div><div>Department of Communication Sciences & Disorders,</div>
<div>College of Communication, The University of Texas at Austin<br>Austin, Texas 78712 </div><div><br></div><div>Phone:1-(512)550-8521 </div><div>Email: <a href="mailto:xzilong@gmail.com" target="_blank">xzilong@gmail.com</a></div>
</div>
</div>
<p></p>
-- <br />
You received this message because you are subscribed to the Google Groups "E-Prime" group.<br />
To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:e-prime+unsubscribe@googlegroups.com">e-prime+unsubscribe@googlegroups.com</a>.<br />
To post to this group, send email to <a href="mailto:e-prime@googlegroups.com">e-prime@googlegroups.com</a>.<br />
To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/e-prime/CANQbNb38KSbJTTmRRYPNaaD%2BFUjPbSj8pAoNfCg50LKy-s-xyA%40mail.gmail.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/e-prime/CANQbNb38KSbJTTmRRYPNaaD%2BFUjPbSj8pAoNfCg50LKy-s-xyA%40mail.gmail.com</a>.<br />
For more options, visit <a href="https://groups.google.com/d/optout">https://groups.google.com/d/optout</a>.<br />