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Getting inquisit to communicate to Power Lab

dk57 — Thu, 22 May 2014 03:42:17 GMT

Hi there,

I don't understand the port definitions and use of binary numbers for inquisit scripting . I am designing a fear conditioning experiment and require Powerlab to automate electrical stimuli for particular trials.

So in terms of putting this into my script, I am unsure of what the binary numbers indicate (under items). I have been given a demo script with these port definitions, however I don't quite understand what they mean. here are a few examples:

/ port = lpt1

/ subport = data

/ items = ("00011000")

/ erase = "00000000"

</port>

/ port = lpt1

/ subport = data

/ items = ("00001000")

/ erase = "00000000"

</port>

/ port = lpt1

/ subport = data

/ items = ("00010000")

/ erase = "00000000"

</port>

Hope that makes sense.

Any help appreciated :)

Dk57

RE: Getting inquisit to communicate to Power Lab

Dave — Thu, 22 May 2014 03:42:17 GMT

Also see the "How to Present TTL Signals Through the Parallel Port" and "How to Use the Parallel Port Monitor Tool" topics in the Inquisit documentation (How To-section), as well as the language reference for the <port> element.

RE: Getting inquisit to communicate to Power Lab

seandr — Wed, 21 May 2014 20:43:02 GMT

Hi there,

The binary strings are numbers written in base 2 rather than the standard base 10. For port signals, each bit maps to a pin, so with binary you can tell which pin is set high.

However, you can also present stimuli as standard 10-base digits. For example:

/ port = lpt1

/ subport = data

/ items = (20)

/ erase = "00000000"

</port>

Perhaps that helps?

-Sean