What is the standard deviation of a "gaussian" element mask in ElementArrayStim

Hi all,
where can I chech the parameters of the gaussian element mask in ElementArrayStim?
Do I understand correctly that its standard deviation is 1?

Thank you,
Aleksandra

The size of the stimulus is to 3 SDs in on each side of the center (so 6 SDs total) so if your stimulus has a size argument of [60,60] pixels the SD of the gaussian will be 10 pixels.

best wishes,
Jon