Linking Inquisit 4 to physiology

Orchid — Mon, 16 Jan 2017 08:38:00 GMT

Dear all,

Is itpossible to link inquisit 4 to physiology? And is this difficult to learn forsomeone, who has not worked on programming with physiology? (I heard it hassomething to do with programming some triggers)

We areusing four different tasks: Scrambled sentence task, priming paradigm, singletarget IAT and an interpretation task, where participants have to rate themeaning of ambiguous sentences. The tasks are almost programmed.

Thephysiology we will measure is: Respiration, heart rate, skin conductance.

In case itis too difficult, is there a possibility to commission the programming of thetriggers? What would be the costs?

Thank youand best wishes!

RE: Linking Inquisit 4 to physiology

Dave — Mon, 16 Jan 2017 08:38:00 GMT

[quote]

[b]Orchid - Monday, January 16, 2017[/b]

Dear all,

Thephysiology we will measure is: Respiration, heart rate, skin conductance.

In case itis too difficult, is there a possibility to commission the programming of thetriggers? What would be the costs?

Thank youand best wishes!

[/quote]

You can send TTL signals to external equipment via a system's parallel or serial port, as well as via a Cedrus StimTracker. What signals to send would depend on the particular equipment you use, i.e., which signals it expects (if any in particular); the equipment's vendor documentation should provide the necessary details. The Inquisit documentation topics you'll want to consult are

https://www.millisecond.com/support/docs/v4/html/howto/howtoportmonitor.htm
https://www.millisecond.com/support/docs/v4/html/howto/howtosendport.htm
https://www.millisecond.com/support/docs/v4/html/language/attributes/port.htm

https://www.millisecond.com/support/docs/v4/html/howto/cedrusstimtracker.htm

You can find various scripts in the library to look at as concrete examples, e.g. the Auditory Oddball Task:

https://www.millisecond.com/download/library/Oddball/

<port> elements work like any other stimulus elements in Inquisit. I.e., you "display" them via a <trial>'s /stimulustimes or -frames just like you would a <text> or <picture> element. For example

<trial mytrial>
/ stimulustimes = [0=fixation; 500=mytext, mytrigger]
...
</trial>

with

<port mytrigger>
/ port = lpt1
/ subport = data
/ items = ("00000001")
</port>

would send "1" over the system's 1st parallel port (LPT1) coinciding with the display of <text mytext>.

You can also commission Millisecond to write and/or adapt existing scripts for you. You would still have to provide the necessary information (i.e., what devices are you using, how do they interface, what signals do they expect, when / what signals do you wish to send, etc.), of course. You can contact sales@millisecond.com and they'll be able to give you a cost estimate.

Hope this helps.

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Linking Inquisit 4 to physiology

RE: Linking Inquisit 4 to physiology