A Probabilistic Palimpsest Model of Visual Short-term Memory
Figure 7
Fisher information fit for one object.
Comparison between similar metrics: the memory fidelity (fitted κ) of single samples collected for different memory states associated with a single memory state (double the value is shown in dashed blue to take account of the doubly stochastic nature of single sampling); the theoretical Fisher information derived in (8); the large M limit for the Fisher information (35); the average inverse variance of samples from the posterior distribution; and the average curvature of the log-posterior at its maximum. This refers to a Conjunctive population code with M = 200, τ = 4, σx = 0.1, σy = 10−5 and 500 samples.