Fail to use Screen('Preference') in PsychToolbox for MATLAB-CodePudding

In PsychToolbox for MATLAB, I try to put

Screen('Preference', 'SyncTestSettings', maxStddev = 0.001, minSamples = 50, maxDeviation = 0.1, maxDuration = 5);

in the MATLAB command window, but it keeps to tell me:

Error in function Preference:   Extra input argument described
Error using Screen
Usage:
 
oldPreferenceValue = Screen('Preference', preferenceName,
[newPreferenceValue])

I was confused. The document given by PsychToolbox is:

[maxStddev, minSamples, maxDeviation, maxDuration] = Screen('Preference',
'SyncTestSettings' [, maxStddev=0.001 secs][, minSamples=50][,
maxDeviation=0.1][, maxDuration=5 secs]);

Is there anything I misunderstand the document? And what is the correct command?

(My MATLAB is R2021a, and PsychToolbox is 3.0.17.12)

CodePudding user response：

What you are trying to accomplish can be done with the following command:

Screen('Preference', 'SyncTestSettings', 0.001, 50, 0.1, 5)

You have to provide these values in the correct order. If you wanted to skip over a value (i.e., leave it as is) then use

[]

like so:

Screen('Preference', 'SyncTestSettings', 0.001, [], 0.1, 5)