Subliminal Presentation?

[jarvis24]

[edited from support email]

I've been using Medialab for the past seven years, but am running into new territory. I am designing a study that employs subliminal images. In MediaLab the "d" parameter has a minimum of 1 second and I need a duration in the millisecond range. Is that possible with MediaLab? Or will I have to use DirectRT? Is it possible to use another program, such as PowerPoint? The university purchased a site licence for both MediaLab and DirectRT last year (after years of persuasion!), so I can easily switch to DirectRT.

[jarvis24]

Generally speaking DirectRT handles subliminal presentations very well and you can be up and running quite quickly. MediaLab is not built for such speed. Definitely check out:

Do I need both MediaLab and DirectRT?
www.empirisoft.com/support/showthread.php?t=15

Of course, there are limits to what you can do with any given hardware. I would suggest doing a general search on subliminal on the boards here to get a feel for the various issues that can come up, e.g.,

Why can I see my subliminal stimuli?
www.empirisoft.com/support/showthread.php?t=55