[Eeglablist] The parallel port - TRIGGERS

[Ruud Kalis]

Dear Davide,

We have done some pilot tests at ANT with an express card to paralel port adapter. The manufacturer is Delock:
http://www.delock.de/produkte/G_66220/merkmale.html?setLanguage=en

The results for trigger accuracy are ok since express cards are on pci slots on the motherboard. The timing is much better than with the asynchronous usb port. Keep in mind that the lcd screen takes different time for changes in colours. A black - white transition might be slower than a grey - white. Also soundcards in laptops might not have vary good timing.. There is a lot to optimize if you want to achieve a high trigger / stimulus synchronization. But for mobile labs a laptop is just more easy to use.

Good luck with setting up your experiments!
Best, 
Ruud Kalis

----- Original Message -----
From: Davide Baldo <davidebaldo84 at gmail.com>
To: eeglablist at sccn.ucsd.edu
Sent: Thu, 12 Jul 2012 15:20:58 +0200 (CEST)
Subject: [Eeglablist] The parallel port - TRIGGERS

Hello all,

When running EEG experiments, I use Psychtoolbox (in Matlab) to
present subjects with different stimuli
So far, I have been using a desktop, that has a parallel port that
allows me to send out the triggers related to the stimuli.
The triggers are accepted in input from the EEG recording system again
via a parallel port.

I would like to use a laptop rather than a desktop to present the
subjects with the stimuli and to send out the related triggers.
The problem is that is hard to find a laptop with a parallel port. I
was wondering if any of you found a solution to this problem.

That would be very helpful!

Thanks in advance,


Davide.
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-- 
Ruud Kalis
Sales and Support Germany
ANT (Advanced Neuro Technology)
Berlin, Germany
T: +49 (0) 163 79 16 114
F: +31 (0)53 430 3795
I: www.ant-neuro.com
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