Reservoir Computing Properties of Neural Dynamics in Prefrontal Cortex
Fig 3
Activities of reservoir model neurons displayed single variable selectivity, mixed selectivity and dynamic mixed selectivity.
Each histogram shows an example reservoir unit activity averaged over all trials of each given condition (error bars represent SEM). All statistical tests displayed on this figure correspond to two-sided pair-wise t-test with false discovery rate correction (p-value < 0.05). A. and B. represent the activity of two single units, respectively selective for phase at epoch late fixation and choice at epoch after feedback. C. Mixed selectivity pattern with significant phase-choice interaction (ANOVA, Phase x Choice interaction, p-value < 10−15) showing statistically higher activities for repeat phase when UL, UR and LR are chosen and the opposite pattern for LL target. D. Reservoir unit selectivity for phase depends on epoch (ANOVA, Epoch x Phase interaction, p-value < 10−15). E. Reservoir unit activity for all conditions of phase and choice at epochs early fixation and after feedback showing two different patterns of mixed selectivity (ANOVA, Epoch x Phase x Choice interaction, p-value < 10−15). Reservoir activity for phase depends on choice (left), and this dependence varies depending on epoch (right).