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Bayesian Integration and Non-Linear Feedback Control in a Full-Body Motor Task

Figure 3

Cross-correlations between process noise and COP.

A) Cross-correlation between the fluctuations in cursor acceleration (process noise, ) and the center of pressure with time lag for each feedback uncertainty level. The inset shows the cross-correlation between fluctuations in the cursor acceleration and the Kalman update in a simulation. The results have been smoothed to mimic postural responses (Gaussian smoothing, = 250 ms) B) Peak amplitude for each feedback uncertainty level. C) Peak time for each feedback uncertainty level. Confidence intervals denote SEM (N = 10). * denotes p<0.05; *** denotes p<0.001 (one-sided paired t-test).

doi: https://doi.org/10.1371/journal.pcbi.1000629.g003