Fig 8. Distinct signatures of history dependence for different sorted units within mouse primary visual cortex.

(Top) Embedding-optimized estimates of R(T) reveal distinct signatures of history dependence for three different sorted units (A,B,C) within a single neural system (mouse primary visual cortex). In particular, sorted units have similar total history dependence R_tot, but differ vastly in the information timescale τ_R (horizontal and vertical dashed lines). Note that for unit C, τ_R is smaller than 5 ms and thus doesn’t appear in the plot. Shaded areas indicate ± two standard deviations obtained by bootstrapping, and vertical bars indicate the interval over which estimates of R(T) were averaged to estimate R_tot (Materials and methods). Estimates were computed with the Shuffling estimator and d_max = 5. (Bottom) Autocorrelograms for the same sorted units (A,B, and C, respectively) roughly show an exponential decay, which was fitted (solid grey line) to estimate the autocorrelation time τ_C (grey dashed line). Similar to the information timescale τ_R, only coefficients for T larger than T₀ = 10 ms were considered during fitting.