Inserting text half way through a trial


Author
Message
Jin
Jin
Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)Distinguished Member (3.5K reputation)
Group: Forum Members
Posts: 26, Visits: 103
Hi all,

I am trying to have the text "please press the space bar when you're ready" appear after a 10 second delay on a screen that already has a question on it. I'm not sure if I should create two separate trials to, or if there's a way for it to appear on the screen?

I look forward to your responses!

Thank you,
Chu

<trial Ftr_ab>
/ branch = [trial.wait]
/ stimulustimes = [0=ftr_ab;1=PSA]
/ responseinterrupt = immediate
/ validresponse = (57)
/ inputdevice = keyboard
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

<text PSA>
/ items = PSA
/ hjustify = center
/ vjustify = center
/ fontstyle = ("Arial", 2%, true)
/ size = (50%, 40%)
/ position = (50%, 85%)
/ select = noreplace
/ resetinterval = 0
/ txcolor = white
/ txbgcolor = black
</text>

<text Ftr_AB>
/ items = Ftr_AB
/ hjustify = center
/ vjustify = center
/ fontstyle = ("Arial", 8%, true)
/ size = (90%, 80%)
/ position = (50%, 50%)
/ select = noreplace
/ resetinterval = 0
/ txcolor = white
/ txbgcolor = black
</text>

Dave
Dave
Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)
Group: Administrators
Posts: 13K, Visits: 103K
The <trial>'s /stimulustimes attribute dictates when stimuli should appear. If you want a stimulus appear at 10 seconds into the trial (i.e.,  10000ms), you specify:

<trial sometrial>
/ stimulustimes = [0=...; 10000=the_text_element_you_want_to_display]
...
</trial>

If, additionally, you want the trial to accept responses *prior* to the appearance of that text stimulus at 10s seconds, you can specify that via /beginresponsetime.

<trial sometrial>
/ stimulustimes = [0=...; 10000=the_text_element_you_want_to_display]
...
/ beginresponsetime = 0
....
</trial>

To illustrate:

<trial sometrial>
/ stimulustimes = [0=a,b; 10000=spacebar]
/ beginresponsetime = 0
/ validresponse = (57)
</trial>

<text a>
/ items = ("some text...")
/ position = (50%, 50%)
</text>

<text b>
/ items = ("some other text...")
/ position = (50%, 55%)
</text>

<text spacebar>
/ items = ("Press the spacebar when you are ready.")
/ position = (50%, 90%)
</text>

Edited 8 Years Ago by Dave
GO

Merge Selected

Merge into selected topic...



Merge into merge target...



Merge into a specific topic ID...




Reading This Topic

Explore
Messages
Mentions
Search