Event marking for stimulus response applications: Skin Conductance with E-Prime

Wed Apr 9 15:58:18 UTC 2014

Hi,

No problem – I do that myself.

Parallel port: 

In general, you write in the user script:

Dim outport As Integer

Then, in the beginning of the experiment an inline with:

outport = &H378 ‘this being my parallel port – not the same for everyone

writeport outport, 1 ‘sends 1 when the command is encountered

‘or:

ShowsWord.OnsetSignalData = 2 ‘sends 2 when ShowsWord is shown (a textdisplay here)

ShowsWord.OnsetSignalEnabled = True

ShowsWord.OnsetSignalPort = Outport

Hope that helps!

Best,

Michiel

PS: features: like wireless (“enabling mobile”).

From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of LYT
Sent: 9. April 2014 18:12
To: e-prime at googlegroups.com
Subject: Re: Event marking for stimulus response applications: Skin Conductance with E-Prime

My mistake--Michiel, not Michael!

Best,
Lawrence

On Wednesday, April 9, 2014 10:33:45 AM UTC-4, LYT wrote:

Hi Michael,

Thanks for your reply! I haven't been able to set it up such that triggers can be received (if I understand what that means). I imagine I would also utilize the parallel ports, however from what I have read so far some in-line code is required to tell E-Prime when to signal that an event has occurred (unless I am mistaken).

No worries about ranting haha--it's another way to share ideas. Also, what kind extra features are you referring to? 

On Wednesday, April 9, 2014 10:15:10 AM UTC-4, Michiel Sovijärvi-Spapé wrote:

Hi,

How’s your Biopac EDA recorder receiving triggers? I use EDA with a Brainproducts QuickAmp, which just gets a trigger input via the PC’s parallel port. Which is extremely simple to arrange.

Funnily, I just had a discussion on the topic of wireless items in EEG and such: in general, I have seen few scenarios where one isn’t paying extra for a feature which eventually sounds a lot better than it is. Personally, I like my subjects sitting in the lab, as fixed as possible, while my stimulus computer is a big box, my ideal screen is a CRT, and the timing is controlled with the serial port for sublime timing. But perhaps I should think more “out of the box”, i.e. out of the lab!

Sorry for the rant!

Best,
Michiel

From: e-p... at googlegroups.com [mailto:e-p... at googlegroups.com] On Behalf Of LYT
Sent: 9. April 2014 09:01
To: e-p... at googlegroups.com
Subject: Event marking for stimulus response applications: Skin Conductance with E-Prime

Hi all,

I know this topic has been covered extensively before but for each post I look at the initial steps have already been completed, which is making it difficult for me to find where to start. If someone could point me in the right direction I'd greatly appreciate it! Here's my situation:

I am planning on using skin conductance equipment, or Biopac's EDA equipment (wireless), while having participants view stimulus via an E-Prime program. I want to have the biopac equipment paired up the E-Prime program where the event timestamp is recorded, allowing for comparison of event and skin conductance rate.

Thank you!

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