Joystick direction as response & RT

liwenna liwenna at gmail.com
Mon Feb 1 21:08:39 UTC 2010


Thanks for forgiving me.

Unfortunately that's also where my knowledge in implementing joysticks
ends...
I hope with you that someone else knows the trick.



On Feb 1, 9:02 pm, Nick <ndla... at gmail.com> wrote:
> I can certainly forgive it, but unfortunately that's not the problem.
> I can get E-Prime to recognize the joystick and record certain
> responses (e.g. button click and concomitant RT), but I can't get it
> to record the direction of first movement and the RT of that response.
>
> On Feb 1, 11:00 am, liwenna <liwe... at gmail.com> wrote:
>
> > I hope you can forgive me if this is is a really silly question but:
> > did you add a 'joystick' to the devices in the experiment properties?
> > (e-prime logo at the top of your experiment tree).
>
> > On Feb 1, 5:15 pm, Nick <ndla... at gmail.com> wrote:
>
> > > Hi everybody,
>
> > > I am trying to interface a Logitech Attack3 joystick with E-Prime. So
> > > far I have only had limited success although I think it should be
> > > pretty simple to do what I need.
>
> > > On each trial, the participants will have to respond to the final
> > > slide with a forward or backward movement of the joystick (depending
> > > on the trial type). All I need is 1) for E-Prime to record the
> > > Reaction Time of when the the push or pull of the joystick is
> > > initiated (in correspondence to the onset of the final slide for each
> > > trial) and 2) for the direction (up or down) of the first joystick
> > > movement to be recorded to the data file.
>
> > > It seems like this should be pretty standard, but I can't find any
> > > code that addresses it. Is there some code you might know of to do
> > > this type of thing?
>
> > > Also, I did read through previous posts attempting to solve this
> > > problem with continuous sampling of the joystick X-Y coordinates, but
> > > I couldn't get the posted code to work out.  Although I don't like
> > > this solution quite as much for my purposes, any help with how to
> > > continuously sample the X-Y coordinates would also be very
> > > appreciated.
>
> > > Thanks!
> > > Nick

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