Parallel port communication - need help

[Daniela Pfabigan]

...sorry, typo

third line should be: Stimulus.OnsetSignalData = c.GetAttrib("Type")
> Hi,
>
> try the following lines
>
> Stimulus.OnsetSignalEnabled = True
>
> Stimulus.OnsetSignalPort = &H378
>  
> Instruktion.OnsetSignalData = c.GetAttrib("Type")
>
>
>
> Place this inline just before the object 'Stimulus'.
>
> Cheers,
> Daniela
>
>
>
> Shivani R schrieb:
>> Hi,
>>
>> I am designing an experiment using E Prime. In this experiment an
>> image comes up on the screen, the subject has to make a decision if
>> the image was a target or distractor. I need to send a trigger at the
>> instant when the picture comes up on the screen. Also I need to send a
>> trigger to say if it was a target or distractor image. I have been
>> trying to do this but not getting it the way I want. The trigger is
>> coming at the instant the fixation comes up on the screen whereas I
>> want the trigger at the instant the picture comes up on the screen. I
>> read some previous posts on the same topic and tried putting my logic
>> in the same way but to no use.
>>
>> Right now I am using the following code:
>>
>> "Fixation" is the object which displays the fixation and "Stimulus" is
>> the object which displays the picture. I have two parallel ports
>> avaialble in my PC - &H378 and &HCCE0. In the TrialList I have an
>> attribute named as "Type" which tells if the image is a target or
>> distractor.
>>
>> Inline1 is as follows:
>>
>> Stimulus.OnsetSignalEnabled = True
>> Stimulus.OnsetSignalPort = &H378
>> Stimulus.OnsetSignalData = &H01
>>
>> Inline2 is as follows:
>>
>> If c.GetAttrib("Type") = Target Then
>> WritePort &HCCE0, 1
>> ElseIf c.GetAttrib("Type") = Distractor Then
>> WritePort &HCCE0, 2
>> End If
>>
>> The main problem I am facing is regarding the position of the inline
>> script. Right now I have placed the Inline1 just before the Stimulus
>> object and Inline2 just after the Stimulus object. Please let me know
>> where I am going wrong in the placement of the  inline script. Any
>> help is really appreciated.
>>
>>
>> Regards
>> Shivani
>>
>>   
>
>
>
>

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