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. 2020 Sep 18;46(6):1396–1408. doi: 10.1093/schbul/sbaa117

Fig. 1.

Fig. 1.

Illustration of different Bayesian models of hallucinations. (a–c) The predictive coding framework. (d–f) The circular inference framework. X, hidden cause; S, sensory variable; x and s, predictions and sensory messages; s-x, prediction error; k, relative weight of inputs as compared to predictions (Kalman gain).