[Eeglablist] Parallel port

[Zubeyir Bayraktaroglu]

Hello,

 

   The parallel port provides real-time control of the signals. So, USB is
not an option to set markers on EEG, because of the jitter introduced by the
operating system. 

 

   For the purpose, two solutions can be recommended: 

 

   First, laptop ports could be extended with a docking station which
includes a parallel port. I can recommend HP
<http://h71016.www7.hp.com/html/interactive/6710b/model.html?jumpid=in_r2910
_3d/NBT/6710b|showcase|flash>  6710b. 

 

   Another solution is a PCMCIA DIO card such as
<http://sine.ni.com/nips/cds/view/p/lang/en/nid/1110> NI DAQCard-DIO-24. A
constant delay may occur between trigger and output.

 

Best, 

 

Zubeyir

 

 

 

-----------------------------------------

Hello,

In our EEG system we`re sending TTL codes through the parallel port of the
display PC which are recorded in a separate EEG channel. These codes are
used in order to synchronize the EEG data with the stimuli. Since this is a
mobile system, we`re using a laptop in order to present the stimuli.
Recently, we had to replace our laptop but couldn`t find any new laptops
with built-in parallel port. 

 

I know that it is a bit out of the scope of this mailing list - but I was
wondering if anyone has experience with this issue.

 

Thanks!

Ido

 



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