event code during object

[Heleen Slagter]

Hi all,

I was hoping to get some advice on the following:

In my EEG experiment, I would like to send out an event code right when 
a response is given to a particular object, even though this response 
might be given *before the offset* of this object (e.g., a face) or 
*after the offset* of this object (during the presentation of the next 
object (e.g., a fixation cross)). The response is made with a keyboard. 
One possibility may be to use a loop to check input from the keyboard, 
but I am afraid that this will result in timing error across the 
experiment. 

Any advice on this matter would be greatly appreciated!
Best wishes,

Heleen Slagter
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University of Wisconsin, Madison
Waisman Laboratory for Brain Imaging & Behavior
Laboratory for Affective Neuroscience

Email: slagter at wisc.edu
www (Lab for Affective Neuroscience): http://psyphz.psych.wisc.edu
www www (Waisman Lab): http://brainimaging.waisman.wisc.edu
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