Millisecond Forums

+x

 

nrouhani - 8/8/2022

hello, 

i am preparing an fMRI task where the buttons on the button box are associated with particular keys. is there a way to translate the button box input to another output key in inquisit? for example, one button is 'a', and i would like to print this response as 1 (instead of 'a') on the screen (participants must see their response on the screen during the task).

thank you!

+x

 

Dave - 8/8/2022

+x

 

nrouhani - 8/8/2022

hello, 

i am preparing an fMRI task where the buttons on the button box are associated with particular keys. is there a way to translate the button box input to another output key in inquisit? for example, one button is 'a', and i would like to print this response as 1 (instead of 'a') on the screen (participants must see their response on the screen during the task).

thank you!

You can always use <values> and /ontrialend logic.

+x

 

nrouhani - 8/8/2022

+x

 

Dave - 8/8/2022

+x

 

nrouhani - 8/8/2022

hello, 

i am preparing an fMRI task where the buttons on the button box are associated with particular keys. is there a way to translate the button box input to another output key in inquisit? for example, one button is 'a', and i would like to print this response as 1 (instead of 'a') on the screen (participants must see their response on the screen during the task).

thank you!

You can always use <values> and /ontrialend logic.

Particpants will see their answer being printed on the screen during the trial ("openended" trial). can i change the values before that, so the right value will be printed on screen?

+x

 

Dave - 8/8/2022

+x

 

nrouhani - 8/8/2022

+x

 

Dave - 8/8/2022

+x

 

nrouhani - 8/8/2022

hello, 

i am preparing an fMRI task where the buttons on the button box are associated with particular keys. is there a way to translate the button box input to another output key in inquisit? for example, one button is 'a', and i would like to print this response as 1 (instead of 'a') on the screen (participants must see their response on the screen during the task).

thank you!

You can always use <values> and /ontrialend logic.

Particpants will see their answer being printed on the screen during the trial ("openended" trial). can i change the values before that, so the right value will be printed on screen?

No. What you can do is something like this

<values>
/ keypressed = 0
</values>

<block myblock>
/ trials = [1-4 = mytrial]
</block>

<trial mytrial>
/ ontrialend = [
    if (trial.mytrial.response == 30) {
        values.keypressed = 1;
    } else if (trial.mytrial.response == 31) {
        values.keypressed = 2;
    } else if (trial.mytrial.response == 32) {
        values.keypressed = 3;
    } else if (trial.mytrial.response == 33) {
        values.keypressed = 4;
    }
]
/ stimulusframes = [1=mytext]
/ validresponse = ("a", "s", "d", "f")
/ branch = [
    trial.youpressed;
]
</trial>

<trial youpressed>
/ stimulusframes = [1=key]
/ trialduration = 1000
/ validresponse = (0)
</trial>

<text mytext>
/ items = ("Press one of the keys 'a', 's', 'd', or 'f'")
</text>

<text key>
/ items = ("You pressed key #<%values.keypressed%>")
</text>

but if the response box sends the code for an "A", then that's what the box sends. Inquisit cannot change that.