L HIPP activity based on all possible feature conjunctions in memory, relative to an implicit baseline of no features recalled. Hippocampal activity at event onset (left) was not sensitive to memory for any combination of features in the upcoming event. In contrast, hippocampal activity at event offset (right) was increased when spatial information was successfully encoded with other episodic features in the preceding event. Co, color; Sc, scene; So, sound. Bars represent fixed effect β estimates of activity in each condition. Error bars indicate SEM. **p < 0.005. *p < 0.05.