Extended Data Fig. 7. Additional context CCGP analysis over stimulus pairs for hippocampus and ventral temporal cortex (stimulus period).
(a-b) Context decoding accuracy for individual stimulus pairs in hippocampus (a) and VTC (b). (c-d) Context CCGP and Context PS for individual stimulus pairs for VTC (compare to Fig. 3g,h for hippocampus). n.s. is p > 0.01 of two-tailed ranksum test comparing absent vs. present. pRS = 0.026 for (c). (e-h) Example neurons from hippocampus (e-g) and VTC (f-h) that are modulated by both stimulus identity and context. Error bars in PSTH (bottom) are ± s.e.m. across trials. (g,h) Mean ± s.e.m. firing rates during the stimulus period. Black arrows indicate the direction in which the firing rate for a stimulus is modulated by context. n = 120 trials. (i) Change in the consistency of context-modulation for stimuli averaged over stimulus-tuned neurons in VTC (n = 104) and HPC (n = 63). Context modulation consistency is the tendency for a neuron’s firing rate to shift consistently (increase or decrease) to encode context across stimuli (see methods). There was a significant interaction between brain area (HPC/VTC) and session type (inference absent/present); 2 × 2 ANOVA, pArea = 0.36, pInference = 0.64, px = 4.5 × 10−5), indicating that modulation consistency increased in HPC in inference present sessions, whereas the opposite was the case in VTC.