Problem with surrounding borders around a visual stimulus

Question

I just have a last question relative to the Gabor element: How can we get rid of these surrounding borders that sometimes appear when we present the stimuli?

Answer 1

Such borders can appear due to anti-aliasing applied by the EventIDE rendering engine. You can turn it off by setting the 'Anti-aliasing' property of the Gabor element (or, any visual element) to 'false'.