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. Author manuscript; available in PMC: 2010 Mar 30.
Published in final edited form as: Exp Brain Res. 2005 May 24;165(1):69–83. doi: 10.1007/s00221-005-2282-1

Fig. 6.

Fig. 6

HV manipulation. a Normal forces of the thumb and VF versus the handle acceleration in the vertical direction. Two representative trials, the load was 13.8 N, the frequencies were 1 and 3 Hz, representative subject. b Internal force and average normal force versus the handle acceleration. Frequency was 3 Hz. The internal force changed from approximately 10.0 to 24.0 N