I have a couple different images set up in an item list named trigg. I have a trial that will display the picture for a certain duration. The block will add one to the current target list so it will cylce through until done.
What I am trying to do is get it so that the 10 specific images in the 30 will trigger a port when displayed. There are 2 images for each port because they send a different data output.
Is there any way to get this to work. Like an if statement/ condition in the Block?
Since <port> elements are essentially equivalent to all other stimulus elements such as <text> or <picture>, the "How to present stimulus pairs" topic in the documentation should answer your question.
So if I were to do a/ select = picture.triggWhat would be required for the first image?
Unfortunately this example is meaningless without context. In general: Your <picture> elements comprise a number of /items. So do your <port> elements. You'll want to have the "item" (i.e. TTL signal) in the <port> depend on the item of the <picture>. Exactly that you'll find covered in the documentation topic I mentioned, only with <text> elements.
there are 10 pics here
/1 = "Img/muffins.jpg" <-- example
/ items = trigg
/ port = lpt1
/ subport = data
/ items = ("00000001")
/ select = ?????
What needs to be where?
(1) If the TTL signal is *always the same* as in your example, there is no need for any selection stuff at all. Simply have your <trial> "display" it along with the picture.
(2) Have you given http://www.millisecond.com/support/docs/v4/html/howto/howtopairs.htm a look? If so, it should be clear how to define the dependency between elements.
The TTL signals will be different for groupings of 2 images in the 10 items.
The trial I have does:<trial trigg>/ stimulustimes = [0=trigg]/ trialduration = 1700/ validresponse = ("W")/ correctresponse = ("W")</trial>
So I would need to associate multiple <port> Since there would be 5 other ports sending different data.
No. A <port> can have multiple /items just like a <text> or <picture>.
I will be associating different <port> items with different pictures.
My trial pulls from the pictures listed in <picture trigg> which is from a <item trigg> list.
The block takes that info and randomizes the pictures being displayed.How would I go about making the picture that is displayed send the item in <port>?
Suppose I have a <text> element with two items, A and B. I want to sent a <port> signal, 00000001 for A and 00000010 for B:<trial mytrial>/ stimulusframes = [1=mytext, myport][...]</trial><text mytext>/ items = ("A", "B")/ select = noreplace</text><port myport>/ items = ("00000001", "00000010")/ select = text.mytext.currentindex</port>
The same applies when using a <picture> instead of <text>.