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. Author manuscript; available in PMC: 2010 Aug 10.
Published in final edited form as: J Neurophysiol. 2007 Feb 7;97(4):2663–2675. doi: 10.1152/jn.00308.2006

Figure 2.

Figure 2

Plots of the center of pressure and force application of the rat’s feet on each individual sensor (FLs: forelimb, RHL right hindlimb, LHL left hindlimb) and the resultant center of pressure (CoP) of the rat as a whole on the support surface. The CoP was computed from the individual sensor force applications. The CoP’s small fluctuations through time form the ‘stabilogram’. Data are shown for (A) a normal rat J494, and (B) an operate rat J490, in an unperturbed resting state before trials began. The CoP fluctuations observed over 500 ms are shown as unconnected dots. The CoP of the normal rat is more caudal than the operate rat’s CoP and shows less rostrocaudal variation in position or dispersion. The difference in position was statistically significant (see text and Table1). The points of application of force by the hindlimbs of the normal rat show directional variations that were absent in the injured rats, and probably associated with hindlimb postural differences between normal and operate rats.