starting & stopping other program actions & microphone issues

[David McFarlane]

Josh,

Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
takes any and all questions at 
http://support.pstnet.com/e%2Dprime/support/login.asp , and they 
strive to respond to all requests in 24-48 hours (although latest 
reports indicate more like 10 days) -- this is pretty much their 
substitute for proper documentation, so make full use of it.  3) If 
you do get an answer from PST Web Support, please extend the courtesy 
of posting their reply back here for the sake of others.

That said, here is my take...

1. Can't help you with the voice key sensitivity issue, contact PST 
Web Support for that.  As to the blank audio files, AFAIK when you 
connect a microphone to the SRBox for use as a voice key, it does 
*not* also send the audio to the computer.  For that you would need 
two microphones, or use a cable splitter to send the microphone 
output to both the SRBox and to the sound in on your PC.  But don't 
take my word for this, please consult PST (and then report back here 
for the rest of us).

2. We worked with the MindWare psychophysiology equipment a couple 
years ago.  Starting MindWare (or more accurately, the BioNex 
hardware) from E-Prime was a simple matter of using WritePort (in a 
bit of inline code) to send a pulse to the appropriate bit at the 
appropriate time.  In our case MindWare supplied a cable to go from 
the parallel port of the E-Prime PC to the inputs of the BioNex 
hardware, and supplied a sample E-Prime program, so you should 
consult MindWare directly for more help there.  I found it best to 
always reset all the output bits to 0 at the start my program; then 
to start BioNex recording I would WritePort the proper bit, Sleep for 
about 20 seconds, then WritePort 0 again.

However, the BioNex hardware did not include any automated means for 
*stopping* the recording.  That had to be done manually at the end of 
each session.  BioNex did include a means for getting a number of 
event pulses from E-Prime, which promised a way to divide the data 
for analysis later.  But we could not get the analysis software at 
the time to use the event markers in the desired way, so that was futile.

In the end, we just used E-Prime to start the BioNex recording at the 
desired moment, manually stopped BioNex recording at the end of the 
session, and used times from the E-Prime data to direct analysis of 
the physiological records.

-- David McFarlane, Professional Faultfinder


At 6/4/2010 04:17 PM Friday, you wrote:
>I am not an e-prime programmer, but I have been designated as the e-
>prime frontliner for my study. My team has asked me to track down the
>answer for two issues. I could not find a clear solution in the
>archives:
>
>1. In our piloting of three e-prime 2.0 release candidate experiments
>this week, the performance of the microphone & serial response box was
>inadequate & variable. We are using the microphone to record responses
>and response times to two affective stroop experiments. Often subjects
>had to repeat their answer to a given stimulus before the microphone
>would signal the program to move on to the next stimulus. When we
>turned the sound sensitivity screw on the serial response box,
>movements from onlookers during the piloting would sometimes trigger
>the program to move on to the next stimulus. In addition, most audio
>files for each response were empty/blank. Any helpful suggestions
>would be much appreciated.
>
>2. We are recording respiration and heart rate data using MindWare
>software & associated hardware. Ideally, we would like e-prime to tell
>MindWare when to begin and end recording heart data for each section
>of each experiment. Does anyone know if this is possible? Again, any
>direction to an archive or tutorial would be much appreciated. Thanks,
>
>Josh

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.