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Forum: SuperLab 4 Support June 21st, 2009
Posted By gshenaut
Replies: 4
Views: 2,926
That is, play very brief videos consisting of a correctly-timed fixation point, stimulus, and masker at certain specific screen locations?
Forum: SuperLab 4 Support March 20th, 2009
Posted By gshenaut
Replies: 4
Views: 2,887
Generally in a priming experiment, you want a certain prime to always go with a certain target. If that's true, then you would need to make trials with two stimulus events and randomize the trials.
...
Forum: General February 17th, 2009
Posted By gshenaut
Replies: 3
Views: 4,179
Some random suggestions.

First, I don't think there is anything special about the microphone, you can probably use a wide variety of different kinds. So, I'd look for a wireless mic/headset kit...
Forum: SuperLab 4 Support February 17th, 2009
Posted By gshenaut
Replies: 6
Views: 3,143
Isn't it the case that there will be a line in the logfile with a "NR" reponse for an event that only uses a time limit to end it, as long as "record and save response" is checked?

Greg Shenaut
Forum: SuperLab 4 Support February 17th, 2009
Posted By gshenaut
Replies: 1
Views: 1,922
For what it's worth, this experiment won't load for me because it requires a "Measuring Computing Devices" plugin.

Greg Shenaut
Forum: SuperLab 4 Support October 18th, 2008
Posted By gshenaut
Replies: 2
Views: 2,060
It is true that moving around columns or rows without taking the structure into account will fail in many cases, and the untagged matrix format preferred by Fortran-style programs like SPSS is not...
Forum: SuperLab 4 Support October 3rd, 2008
Posted By gshenaut
Replies: 5
Views: 2,608
I'm talking about using audio frequencies to encode events and storing them along with the subject verabl responses on a stereo tape. The subject wouldn't hear them, they'd be fed directly into one...
Forum: SuperLab 4 Support October 2nd, 2008
Posted By gshenaut
Replies: 5
Views: 2,608
Something we used to do in the old days was to use a multi-track tape recorder to record the audio or other waveforms on one or more tracks, and then use an fsk or other encoder--basically, an old...
Forum: SuperLab 4 Support September 28th, 2008
Posted By gshenaut
Replies: 3
Views: 2,161
Hisham, if I understand the question, it should be possible to use text stimulus lists to do this (I've attached a very simple example).

What is not possible to do is to do much formatting of the...
Forum: SuperLab 4 Support September 13th, 2008
Posted By gshenaut
Replies: 3
Views: 2,348
if it would be possible to define a number of different keyboard string inputs located at different places on the screen (for example, aligned in a column from to to bottom). Then if you didn't erase...
Forum: SuperLab 4 Support September 13th, 2008
Posted By gshenaut
Replies: 4
Views: 2,482
one can make the case that if an X never occurs after another X, then the subject is in a different state after an X than after a Y in term of expectation set, and this may or may not affect the...
Forum: SuperLab 4 Support September 13th, 2008
Posted By gshenaut
Replies: 4
Views: 2,445
As I understand the licensing with SL, what would be saved by running in a virtual environment instead of natively? I think nothing at all.

It sounds to me that this might be a situation where one...
Forum: Experiments September 13th, 2008
Posted By gshenaut
Replies: 2
Views: 5,568
is that in Superlab, you can't deal directly with complex stimulus events, only simple ones, like individual text string events. However, if you have a script that sets things up like you said, "code...
Forum: SuperLab 4 Support August 9th, 2008
Posted By gshenaut
Replies: 1
Views: 1,832
Is there any way to set the data viewer up so that you can open it from the control-click menu on the Mac? If I try this, the viewer ignores the .txt file you clicked on and runs with no file open.
...
Forum: Experiments August 9th, 2008
Posted By gshenaut
Replies: 6
Views: 6,249
It turns out that merely deleting the default "left mouse click" response isn't quite the correct way to get rid of this problem, which is slightly subtler than I thought. You also need to go into...
Forum: Experiments August 9th, 2008
Posted By gshenaut
Replies: 6
Views: 6,249
In pilot testing, I found problem with the mouse click autolocation kludge.

Remember that in order for this to work, you have to define the mouse regions associated with each screen location as...
Forum: SuperLab 4 Support August 8th, 2008
Posted By gshenaut
Replies: 4
Views: 2,508
There is an option to save data after each trial. If that is enabled, header rows are written as soon as the experiment begins (thereby creating the log file) and data is written to it after each...
Forum: SuperLab 4 Support August 5th, 2008
Posted By gshenaut
Replies: 7
Views: 2,855
But
the text you cited talks about how the system resolves symbolic links, and doesn't address whether it's OK for programs to store them unresolved or not.

POSIX or not, if you store a path with...
Forum: SuperLab 4 Support August 5th, 2008
Posted By gshenaut
Replies: 7
Views: 2,855
So superlab uses chdir to load stimuli? This seems unnecessary (and wrong?) to me.

To me, the more relevant example would be:

$ x=/etc

$ echo $x
/etc

$ ls $x
Forum: SuperLab 4 Support August 4th, 2008
Posted By gshenaut
Replies: 7
Views: 2,855
If instead of copying the scenario file into a new hierarchy, you symlink it, the option to save the logfile in the same folder as the experiment scenario is broken--it doesn't go in the folder where...
Forum: SuperLab 4 Support August 4th, 2008
Posted By gshenaut
Replies: 7
Views: 2,855
It appears that if a stimulus list file folder is actually a symbolic link, the link is not used, instead, the target of the link is used, for both the absolute and relative path. It's apparently OK...
Forum: SuperLab 4 Support August 4th, 2008
Posted By gshenaut
Replies: 7
Views: 2,855
Apparently, Superlab keeps two paths in its scenario file for each external stimulus file or folder, one an absolute path from the filesystem root, the other a relative path from the last place that...
Forum: New Feature Suggestions August 1st, 2008
Posted By gshenaut
Replies: 4
Views: 6,269
Hank, I wasn't really meaning "right" as a contrast with "wrong", just as a synonym for "adequate", "competently", "flexibly", whatever.

Cheers,
Greg
Forum: New Feature Suggestions August 1st, 2008
Posted By gshenaut
Replies: 1
Views: 6,341
This is a real oddball suggestion. In our lab, we have three computers to test subjects in the lab, plus two that we use to test AD patients in their homes. We have had, in the past, problems...
Forum: New Feature Suggestions July 31st, 2008
Posted By gshenaut
Replies: 4
Views: 6,269
OK
What the old program did was to always have an adjustment parameter added to each coordinate (of the screen and of the particular rectangle you were fiddling with) before the real arithmetic started....
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