OnsetDelay query

[David McFarlane]

River,

>So therefore the OnsetDelay in this instance describes the delay
>between the end of the fixation duration and the start of the image
>duration. Would this be correct?

Just to be clear, there is practically *no* delay between the 
*actual* end of the fixation duration and the *actual* start of the 
image duration.  OnsetDelay refers rather to the delay from the 
*specified* start time of an object to the *actual* start time of 
that object.  This is illustrated in a very complex diagram in 
Appendix E of the User's Guide that came with E-Prime.

Beyond that, I would guess that your high-resolution images present a 
problem.  You could test that further by trying some good old 
6402x480 16-bit images.  Offhand, OnsetDelays of over 400 ms seem 
*way* too long, and I hope others weigh in with their own experiences here.

You might also resort to pre-loading or caching the images before 
display.  You may download PST's 
"<http://www.pstnet.com/e-prime/support/samples.asp?Mode=View&SampleID=23>Pre-loading 
images without the use of Canvas" sample from their web site, or you 
may try the TimingParadigm5 example mentioned in Chapter 3 of the 
User's Guide that came with E-Prime (PST does not provide 
TimingParadigm5 for download, you must request it through e-mail or 
Web Support as I did).

-- David McFarlane, Professional Faultfinder


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en
-~----------~----~----~----~------~----~------~--~---