Otero-Millan, Macknik, and Martinez-Conde (2012) Showed the Rotating Snake Illusion

Otero-Millan, Macknik, and Martinez-Conde (2012) showed the rotating snake illusion to participants and asked them to indicate when the perceived motion was at a maximum and to indicate when the figure appeared to be not rotating.They found that the perception of motion was ______.

A) highly correlated with the micro-saccades, which they measured via eye tracking
B) associated with smooth pursuit eye movements
C) associated with beta motion induced by the figure
D) highly correlated with activity in the anterior intraparietal region