A beep element just plays whatever sound your system plays on the MATLAB beep command, then ends on its own. For an actual beep with options and/or precise timing use a sound element instead.
Yes, immediately.
If an element can end on its own, you don't need to set end conditions for it in property end (unless you want it to maybe end earlier).
No—runs until a condition you set in property end.
You can vary or allow the subject to adjust the following input properties of an object of this type in real time when it's running. If you need to make other properties adjustable, you can edit the element type code—see Element Type Programming Manual.
position
nn_eyes
rotation
colorMask
alpha
intensity
contrastMult
drawCodeVars
(None)
(None)
PsychBench uses record properties to record information during experiments. You can't set record properties but you can see them in experiment results by listing them input property report.
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