Forgetting across a hierarchy of episodic representations

Rich episodic experiences are represented in a hierarchical manner across diverse network of brain regions, and as such, the way which episodes forgotten is likely to be similarly diverse. Using novel experimental approaches statistical modelling, recent research has suggested that item-based representations, such ones related colour shape an object, fragment over time, whereas higher-order event-based representations may more ‘holistic’ uniform manner. We propose framework reconciles these findings, where complex manner, from individual items, small-scale events, large-scale narratives. Each level hierarchy distinct perirhinal cortex, posterior hippocampus, anterior hippocampus ventromedial prefrontal cortex. Critically, forgetting underpinned by different mechanisms at each hierarchy, leading patterns behaviour.