“Reinstatement of a specific event representation in cortico-hippocampal networks.
The process of recalling a particular event or episode often begins with the construction of a situation model, here a birthday dinner at a restaurant. We propose that such a situation model, informed by your schemas of a birthday celebration and dining at a restaurant, are constructed by posterior-medial cortical areas (blue). The situation model is populated with local entities, such as drinks, snacks, friends, and a table. We propose that these local features are represented in anterior-temporal cortical areas (red). Through interactions with the hippocampus, these two cortical networks are able to sharpen their activity patterns into a representation of a specific event such that specific people, foods, and drinks are recalled in a particular arrangement at a particular table and a particular restaurant. Moreover, the hippocampus facilitates the integration of information across the two networks.”
“Importantly, these specific details need not be true.
We might expect that the likelihood of inserting erroneous details into the reconstructed event depends on the degree to which hippocampal feedback can effectively constrain patterns of activity within cortical regions or the extent to which the target details interfere with other stored representations.”