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Correlation of the two precision metrics in individual subjects.
The graph (centre) shows the correlation between noise-induced changes in sensory precision – estimated by the pursuit DCM – and mean changes in the gain (self-inhibition) of pyramidal cells in V1 (left), estimated by the MEG DCM. Sensory log-precision (ln Πs) is the subjective expectation of inverse variance of random fluctuations at the sensory level (ωs, highlighted below). The full model is described in Fig. 1.
