Video 3. Experiment 2 –Ear movement example from a participant who exhibited exceptionally large, long-lasting involuntary auricular muscle activations and ear motion during the endogenous attention task in Experiment 2.
The attention of the participant was directed to the story played from the posterior right speaker. The organization of the plots and co-registration is as in Video 1. However, this time the raw videos without digital magnification are shown. The raw videos are played faster, time-locked to the time axis given in minutes in the one dimensional plots of the rectified postauricular muscle activity. Note that time-axis reflects the entire timeline including the instructions and the introduction to the stories before the directional listening task. The listening task started at approximately 2 min. The video also documents the end of the listening task (around 7 min) accompanied with a time–locked offset of the muscle activation and pinna displacement. A causal relation of the rectified postauricular muscle activity and the motion magnitude in the videos is clearly noticeable, especially for the ipsilateral ear.