Sending event markers from Inquisit script to Acqknowledge via parrallel port

Jin — Thu, 29 Jun 2017 12:43:41 GMT

Hi all,

I wanted ask and see if anyone knows how to send an event marker after each stimuli is presented from an Inquisit script to Acqknowledge?

Our experiment has participants watch 1 minute videos and have them describe what they just saw, and we would like to collect physiological data in conjunction with the video viewing and response. The issue we are having is figuring out a way for Inquisit to send an event marker into Acqknowledge after each stimuli is presented and ends, so that we can accurately see the timepoints where a video started and ended, and when the response section started and ended.

In a nutshell, what type of code would I need to use in order for Inquisit to send an event marker to Acqknowledge after each stimuli is presented?

Any help would be appreciated!!
- Jin

Here is our code for our experiment (without putting ports in). We have 6-7 videos in "FormA"

**********Trials***********

<trial introduction>
/ pretrialpause = 250
/ posttrialpause = 250
/ stimulustimes = [1=introduction]
/ validresponse = (57)
/ inputdevice = keyboard
/ recorddata = false
</trial>

**NA Video Trials**

<trial NA_Intro>
/ stimulustimes = [0=NA_Intro]
/ responseinterrupt = false
/ validresponse = (57)
/ inputdevice = keyboard
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

<trial FormA>
/ stimulustimes = [0=FormA]
/ branch = [trial.q_NA]
/ responseinterrupt = trial
/ validresponse = ("t")
/ timeout = 4000
/ inputdevice = keyboard
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

**NA Questions**

<trial Group_ANA>
/ branch = [trial.FormA]
/ stimulustimes = [1=Intro_NA]
/ responseinterrupt = immediate
/ validresponse = (57)
/ inputdevice = keyboard
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

**Wait+Questions**

<trial Q_NA>
/ branch = [trial.wait]
/ stimulusframes = [1=Q_NA]
/ responseinterrupt = immediate
/ validresponse = (57)
/ inputdevice = keyboard
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

<trial wait>
/ stimulustimes = [0=wait; 0=waiting; 30000=beep]
/ validresponse = ("t")
/ inputdevice = keyboard
/ responseinterrupt = immediate
/ timeout = 30000
/ pretrialpause = 250
/ posttrialpause = 250
</trial>

**********Blocks***********

<block NA>
/ trials = [1=NA_Intro]
</block>

<block Group_ANA>
/ trials = [1=Group_ANA; 2=Group_ANA; 3=Group_ANA; 4=Group_ANA; 5=Group_ANA; 6=Group_ANA; 7=Group_ANA; 8=Group_ANA]
/ recorddata = true
</block>

<block trial_end>
/ trials = [1 = trial_end]
</block>

RE: Sending event markers from Inquisit script to Acqknowledge via parrallel port

Dave — Thu, 29 Jun 2017 12:43:41 GMT

[quote]

[b]Jin - Thursday, June 29, 2017[/b]

[/quote]

You need to set up <port> elements for the various markers you wish to send, and then "display" those <port> stimuli at the desired points in time via your <trial> elements' /stimulustimes or /stimulusframes -- exactly like you display any other kind of stimulus (<text>, <picture>, <video>, etc.).

See e.g. https://www.millisecond.com/download/library/oddball/

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Sending event markers from Inquisit script to Acqknowledge via parrallel port

RE: Sending event markers from Inquisit script to Acqknowledge via parrallel port