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. Author manuscript; available in PMC: 2011 Apr 3.
Published in final edited form as: IEEE Trans Biomed Eng. 2009 Sep 18;57(2):267–275. doi: 10.1109/TBME.2009.2031874

Fig. 4.

Fig. 4

Experimental Transfer Function (TF) estimated from body sway response to SS rotations for young adult (YA) and older adult (OA) age groups. Averages were taken across the three sessions for PRTS-SS trials alone. YA and OA gain curves were similar in the low-frequency range (below 0.3 Hz), while the gain of the older adults was larger in the mid- and high-frequency ranges (above 0.3 Hz) and exhibited a slight peak around 0.7 Hz.