Millisecond Forums » Millisecond Forums » Inquisit 4 » Port triggered from Random displayed images

RE: Port triggered from Random displayed images

Dave — Mon, 17 Jun 2013 09:10:30 GMT

[quote]When spacebar is hit during test1 nothing is broadcast.[/quote]

Please see the documentation for the /responsetime attribute. The above is the default, expected behavior.

[quote]When hit during test2 it broadcasts the corresponding responsemessage port.[/quote]

That is expected, too. In addition, please see the documentation for the /responseinterrupt attribute.

RE: Port triggered from Random displayed images

Lostcode — Mon, 17 Jun 2013 09:06:31 GMT

<trial test>
/ stimulustimes = [0=test1, test1Port; 200=test2, test2Por]
/ validresponse = (" ")
/ correctresponse = (" ")
/ responsemessage = (" ", broadPort, 50)
</trial>

When spacebar is hit during test1 nothing is broadcast. When hit during test2 it broadcasts the corresponding responsemessage port.

RE: Port triggered from Random displayed images

Dave — Mon, 17 Jun 2013 08:46:03 GMT

[quote]I have 2 items in stimulustime for a trial
the port is triggered when spacebar is pressed. It is only displaying for the second item being displayed.[/quote]

I fail to understand what exactly the above is supposed to mean. Please be more specific, i.e., provide a clearer description (what is / isn't sent; what's the desired vs. the observed behavior) as well as a concrete, minimal example w/ code.

In case you are referring to signals sent via /responsemessage or the like, no, there is no way to record those.

RE: Port triggered from Random displayed images

Lostcode — Mon, 17 Jun 2013 08:36:19 GMT

Reference to older question.

I have 2 items in stimulustime for a trial
the port is triggered when spacebar is pressed. It is only displaying for the second item being displayed.

Is there something I need to reference so it is recorded both times?

RE: Port triggered from Random displayed images

Dave — Mon, 17 Jun 2013 08:13:48 GMT

Well, yes. Simply send another <port> with 00000000 at the desired time after the signal via the <trial>'s /stimulustimes:

http://www.millisecond.com/forums/Topic5755.aspx#5755

RE: Port triggered from Random displayed images

Lostcode — Mon, 17 Jun 2013 08:10:28 GMT

Is there a way to set a pulse width in inquisit for the TTL port? Like I want it to display the number then end with a zero for the pulse after so many ms.

RE: Port triggered from Random displayed images

Dave — Thu, 13 Jun 2013 06:04:12 GMT

See http://www.millisecond.com/forums/Topic1721.aspx.

RE: Port triggered from Random displayed images

Lostcode — Thu, 13 Jun 2013 05:52:32 GMT

That worked thank you.

Last questions:

Is there a way to set it up so that when a valid response is triggered the port will spit out a response?

RE: Port triggered from Random displayed images

Dave — Tue, 11 Jun 2013 12:25:07 GMT

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>.

RE: Port triggered from Random displayed images

Lostcode — Tue, 11 Jun 2013 12:22:51 GMT

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>?

RE: Port triggered from Random displayed images

Dave — Tue, 11 Jun 2013 12:17:24 GMT

[quote]So I would need to associate multiple <port> Since there would be 5 other ports sending different data.[/quote]

No. A <port> can have multiple /items just like a <text> or <picture>.

RE: Port triggered from Random displayed images

Lostcode — Tue, 11 Jun 2013 12:14:41 GMT

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.

RE: Port triggered from Random displayed images

Dave — Tue, 11 Jun 2013 12:05:49 GMT

(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.

RE: Port triggered from Random displayed images

Lostcode — Tue, 11 Jun 2013 12:00:12 GMT

there are 10 pics here

/1 = "Img/muffins.jpg" <-- example

</item>

/ items = trigg

</picture>

/ port = lpt1

/ subport = data

/ items = ("00000001")

/ select = ?????

</port>

What needs to be where?

RE: Port triggered from Random displayed images

Dave — Tue, 11 Jun 2013 11:55:09 GMT

[quote]So if I were to do a
/ select = picture.trigg

What would be required for the first image?[/quote]

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.

RE: Port triggered from Random displayed images

Lostcode — Tue, 11 Jun 2013 11:49:16 GMT

So if I were to do a
/ select = picture.trigg

What would be required for the first image?

RE: Port triggered from Random displayed images

Dave — Tue, 11 Jun 2013 11:39:56 GMT

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.

Port triggered from Random displayed images

Lostcode — Tue, 11 Jun 2013 11:37:25 GMT

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?