Biopac not receiving E-Prime signal for second part of n-back task

[Ashley Sanders]

Hi all,
 
 I am having trouble getting a stimulus delivery/response signal to show up 
on Biopac for the second part of our n-back experiment. The first task, 
zero back, asks the subject to press a certain key when a neutral face is 
presented (non-target) and another key when a scared face is presented 
(target). The inline script is as follows and works perfectly in connection 
with Biopac: 
 
Const OutPort As Integer = &hD800
'Const BioPacTrigger As Integer = &h01 
 
WritePort OutPort, 0
 
TaskStimZERO.OnsetSignalEnabled = True
TaskStimZERO.OnsetSignalPort = OutPort
TaskStimZERO.OnsetSignalData = c.GetAttrib("BioStim")
 
TaskStimZERO.OffsetSignalEnabled = True
TaskStimZERO.OffsetSignalPort = OutPort
TaskStimZERO.OffsetSignalData = 0
 
Next, the one back section asks the subject to only press the target 
assigned key after *two* scared faces have been presented in a row. This is 
where Biopac is not collecting a signal. The inline script is as follows:
 
Const OutPort As Integer = &hD800
'Const BioPacTrigger As Integer = &h01 
 
WritePort OutPort, 0
 
TaskStimONE.OnsetSignalEnabled = True
TaskStimONE.OnsetSignalPort = OutPort
TaskStimONE.OnsetSignalData = c.GetAttrib("BioStim")
 
TaskStimONE.OffsetSignalEnabled = True
TaskStimONE.OffsetSignalPort = OutPort
TaskStimONE.OffsetSignalData = 0
 
 
I have tried numerous ways to get this to work but have failed. If anyone 
has any advice, please let me know. Your help would be GREATLY appreciated!
 
 
Thanks in advance, 
Ashley

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