response unit for E-prime 2.0 Professional with ERP hardware

[Chris Jones]

I'd also like to thank Ben very much for this information.  I came to this 
group looking for instructions on how to build a serial or parallel 
response box.  My department won't be able to approve a response box until 
the fall and I want some data now... 
 
The game controller option makes sense for so many reasons, including the 
psychological effect or context effect - perhaps pulling for more valid 
data - particularly in a stop signal paradigm.   Seems to fit with what 
Mich (Psychology, Nottingham; sorry don't have thread handy) elsewhere 
about psychological effects as being under-rated in comparison with timing 
precision... 
 
Just to review: I can use a Logitech game pad - for example 
http://www.logitech.com/en-ca/gaming/controllers/7360
 
and download a driver...  I don't actually see a place to download drivers 
of the type Ben describes, but there is this information:  
 
____________________________________
 
DirectInput (D)

DirectInput mode works with Windows drivers to enable basic input 
functionality. This input mode also lets you use the Logitech Gaming 
Software to customize the inputs for games that don't normally allow you to 
do so, or don't have gamepad support at all.

You can use the Logitech Gaming Software with DirectInput mode to assign a 
specific key or key combination to any of the buttons or thumbsticks on the 
gamepad. You can also assign each thumbstick to work like a joystick or 
mouse.

NOTE: Logitech doesn't provide configuration software for non-Windows 
systems, but many games allow you to configure inputs in-game. DirectInput 
mode lets the gamepad communicate with the drivers on many such systems.
__________________________________________
 
...And so using a driver and/or the above information, I will be able to 
assign an ASCII key or number to one or more gamepad buttons, right? 
 
And e-prime will be able to add this device - as an input device or 
the type, "response box"?  
 
And then what about the timing errors?   I'm not so concerned, but can 
anyone estimate the timing errors for data logging?  Is there a way to 
minimize the error by changing the input refresh rate somewhere?  
 
Thanks so much, 
Chris 
 
Chris Jones, Ph.D.
Department of Psychology
Kwantlen Polytechnic University
Surrey, BC, Canada 
 

On Wednesday, April 22, 2009 6:17:25 AM UTC-7, ben wrote:

> i've used a couple different USB controllers for this purpose over the 
> years.  they're so much cheaper than the cedrus boxes or the pst response 
> boxes. 
> both controllers i've used, and i would imagine all controllers of this 
> type, have an accompanying driver which you download from the 
> manufacturer's website and which allows you to assign a value to the 
> various controller buttons.  presses on the controller mimic keyboard 
> button presses, so all you need to do in eprime is set the object 
> collecting responses to look for a keyboard response (as opposed to a 
> response from a mouse or a pst response box).  for instance, set the object 
> to accept '0' or '1', and then assign one button on the controller to be 
> '0' and the other to be '1', turn off all the other buttons, and you're 
> good to go.
> pretty straight forward.
>
> http://www.logitech.com/index.cfm/gaming/pc_gaming/gamepads/devices/301&cl=US,EN
>
> ben
>
> On Wed, Apr 22, 2009 at 7:56 AM, Jeffrey Bedwell <jbedwell at mail.ucf.edu>wrote:
>
>>
>> Thanks for this info. Are you using this gamepad with E-Prime? If so,
>> do you write script to tell the software how to interact with the
>> gamepad?
>>
>> -Jeff
>>
>> On Apr 21, 9:20 am, baltimore.... at gmail.com wrote:
>> > we use the logitech precision usb gamepad.
>> >
>> > On Apr 10, 2009 2:09pm, Jeffrey Bedwell <jbedw... at mail.ucf.edu> wrote:
>> >
>> >
>> >
>> > > Hi. I was wondering if anyone has suggestions for a button response
>> > > unit to use with E-Prime 2.0 Professional in the context of ERP/EEG
>> > > experiments? The PST response unit does not appear to be ideal for
>> > > this because it has an A/C power cable coming up to the unit that may
>> > > cause interference with the ERP signal. I'd like some type of video
>> > > game controller or wireless unit that the participant can hold in
>> > > their lap comfortably. Also, if it can plug into USB port, that may be
>> > > ideal. Does anyone have any suggestions? Also, if anyone has
>> > > successfully used the PST response unit in the context of ERP/EEG
>> > > equipment, please let me know your thoughts on this. Thanks. I'd
>> > > appreciate any feedback!
>> > > Jeffrey S. Bedwell, Ph.D.
>> > > Assistant Professor
>> > > Department of Psychology
>> > > University of Central Florida- Hide quoted text -
>> >
>> > - Show quoted text -
>>  
>>
>

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