I have uploaded a screenshot of what I am trying to achieve.
I am new to coding and am creating an experiment for my PhD so any tips would be much appreciated. I am trying to code 3 concentric green rings (largest 6.5°, middle, 4.5° degrees and smallest 2.5°) with 4 dots spaced equidistantly (see image). These dots are smallest on the innermost ring (0.32°), larger on the middle ring (0.41°) and largest on the outermost ring (0.52°) The rings need to rotate continuously (not jittered), alternating between a clockwise and anticlockwise rotation every 1 minute. On 20% of total trials one of the dots will increase in luminance (from 0, 100,0 to 0.140,0 RGB for 300m/s. Each dot will be equally likely to become illuminated.