send event related signal to serial/parallel ports

[Estelle_Thought_Technology]

Hi,
I am new to this group, and a new e-prime user too. I will be working
as an intern for the summer for a company named 'Thought Technology' .
They develop hardware and software for biofeedback use and they want
to make the interface between e-prime and their hardware possible so
that users can use their technology to acquire physiological data
during an e-prime protocol.

The first goal will be to send event-related signals from e-prime to a
port so it can be recieved and handled by a software that will be
developped for this use.

Reading the documentation, I realized that event-related signals are
usually sent through the parallel port. Is there a reason to use the
parallel port instead of the serial port ?

I saw that SerialDevice objects exist and that there is a method to
write to the serial port, but is it possible to notify external
equipment the exact time that an event occurs in E-Prime using the
serial port ? I know it coul be done with the parallel port using the
onset and offset signal properties of objects...I wonder if the same
could be done through the serail port since it is more commonly used
than the parallel port these days...

Thank you for your help, it will be really appreciated !

Estelle

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