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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I need to send a trigger signal denoting the exact time of
stimulus presentation (assuming parallel port is the easiest method).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Here is the problem/question – in the event of, say, a
visual stimulus, what is the best way to get these as close in sync as
possible? I could have an inline code sending the trigger directly prior to an
ImageDisplay… but then it wouldn’t it at least have the delay associated
with waiting for the next screen update (could be up to 9ms if 100hz monitor)?.
Or – what about putting the inline right after said presentation – would
it actually occur immediately (like w/in a few ms) afterwards?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Or – is there a way to do it with a Slide object?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Unfortunately, this will be very difficult to test out
empirically…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>W. David Hairston, Ph.D.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ANSIR Lab</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Dept of Radiology</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceName w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Wake</span></font></st1:PlaceName><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <st1:PlaceType
w:st="on">Forest</st1:PlaceType> <st1:PlaceType w:st="on">University</st1:PlaceType>
<st1:PlaceType w:st="on">School</st1:PlaceType></span></font></st1:place><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> of Medicine</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Medical Center
Blvd</span></font></st1:address></st1:Street><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Winston-Salem</span></font></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <st1:State
w:st="on">NC</st1:State> <st1:PostalCode w:st="on">27157</st1:PostalCode></span></font></st1:place><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(336) 716-7160 (Offiice)</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(446) 716 0798 (Fax)</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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