Each little disk is a four-frame movie, all with the same face, in a sequence positive-positive-negate-negative. Gaze at the central fixation point for ~30w, then click on the same fixation pout. The motion will stop and you will see a strong motion aftereffect in each disk. So the four-stroke cycle is stimulating low-level cortical motion detectors.
Obama seems to move to the left and Trump seems to move to the right. Neither changes his average position.
Vertical four-stroke drift: Currencies
[quicktime width=”600″ height=”400″]http://anstislab.ucsd.edu/files/2012/11/S1.mov[/quicktime]
[quicktime width=”600″ height=”300″]http://anstislab.ucsd.edu/files/2012/11/S2-1.mov[/quicktime]
[quicktime width=”600″ height=”300″]http://anstislab.ucsd.edu/files/2012/11/S3-1.mov[/quicktime]
[quicktime width=”600″ height=”300″]http://anstislab.ucsd.edu/files/2012/11/S4-1.mov[/quicktime]
Each movie is four frames long, in the sequence positive-positive-negative-negatives.