Labeling EEG Triggers

[Peter Quain]

I've never used serial device. Sure, you can write to it, but I think 
what you write will depend on how your EEG system is designed to 
receive event information (detailed in its manual?). Others who know 
these things will have to help.

Maybe look in e-basic help, for "SerialDevice Object (topic)"

Or search this group for serial port ... here is a post by David 
McFarlane, for example, who obviously knows of these things:

https://www.pstnet.com/forum/Topic4793-8-1.aspx#bm4801

A couple of examples from google search of e-prime code to interface 
with different external systems through serial port:

http://www.mindmedia.nl/CMS/en/support/knowledge-base/item/272-how-to-run-an-e-prime-project-by-using-the-nti.html

http://www.cedrus.com/support/stimtracker/tn1411_eprime.htm

good luck


At 01:11 AM 8/02/2013, you wrote:
>Thank you for your quick reply! We are using a serial port - do 
>these instructions follow for serial ports as well?
>
>Also, if I want to include more than 1 condition to label the 
>trigger (so not just "numbos", but also "type" for example), would I 
>be okay with using:
>
>elseif c.GetAttrib ("numobs") = 10
>           and c.GetAttrib ("type") = 3 then
>                  WritePort &H378, &HA
>
>Thank you kindly in advance - I appreciate the help!
>
>M
>
>
>
>
>On Wed, Feb 6, 2013 at 8:42 PM, Alphonse Stickle 
><<mailto:alphonse.stickle at gmail.com>alphonse.stickle at gmail.com> wrote:
>
>.. for clarity sake, sorry, typo - Decimal address = 888, not 88
>
>
>At 12:40 PM 7/02/2013, you wrote:
>
>
>>An example using native parallel port (Decimal address = 88, 
>>therefore Hex address 378) to send bytes to a NeuroScan system 
>>using Hex notation (&H...), which would appear in NeuroScan .cnt 
>>file as trigger codes 1 to 10:
>>
>>' assess item level and send appropriate trigger code to NuAmps
>>If c.GetAttrib ("numobs") = 1 then
>>                  WritePort &H378, &H1
>>
>>         elseif c.GetAttrib ("numobs") = 2 then
>>                  WritePort &H378, &H2
>>
>>         elseif c.GetAttrib ("numobs") = 3 then
>>                  WritePort &H378, &H3
>>
>>         elseif c.GetAttrib ("numobs") = 4 then
>>                  WritePort &H378, &H4
>>
>>         elseif c.GetAttrib ("numobs") = 5 then
>>                  WritePort &H378, &H5
>>
>>         elseif c.GetAttrib ("numobs") = 6 then
>>                  WritePort &H378, &H6
>>
>>         elseif c.GetAttrib ("numobs") = 7 then
>>                  WritePort &H378, &H7
>>
>>         elseif c.GetAttrib ("numobs") = 8 then
>>                  WritePort &H378, &H8
>>
>>         elseif c.GetAttrib ("numobs") = 9 then
>>                  WritePort &H378, &H9
>>
>>         elseif c.GetAttrib ("numobs") = 10 then
>>                  WritePort &H378, &HA
>>End If
>>
>>... here is a conversion tool:
>>
>><http://easycalculation.com/hex-converter.php>http://easycalculation.com/hex-converter.php
>>
>>At 12:23 PM 7/02/2013, you wrote:
>>>Hi All,
>>>
>>>I am using inline code (WritePort) in Eprime2 to send triggers 
>>>from the test computer to an EEG computer.
>>>
>>>I would like to add a label to each trigger that specifies what 
>>>type of trial that specific trigger is associated with (there are 
>>>several levels to several variables). Does anyone have any insight 
>>>for how I might go about doing this?
>>>
>>>Thank you in advance!
>>>M
>>>
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>
>--
>Melaina T. Vinski
>MSc Candidate
>Psychology, Neuroscience & Behavior
>Cognitive Sciences Lab
>McMaster University
>905-525-9140 ext. 22853
>
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