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. Author manuscript; available in PMC: 2014 Sep 18.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2004 Sep;12(3):360–366. doi: 10.1109/TNSRE.2004.834203

Figure 2.

Figure 2

Anterior-posterior (A-P) head translation of subject A obtained while viewing the optic flow stimulus at 0.25 Hz. Top: Time series showing head translation (thick line) and optic flow stimulus (thin line). Bottom: Periodogram of head translation, before pre-whitenting filter was applied. Observe peak at 0.25 Hz.