The hippocampus: a manifesto for change

Area of Science:

• Neuroscience
• Cognitive Psychology
• Computational Neuroscience

Background:

• The hippocampus supports diverse cognitive functions like episodic memory, future imagination, and spatial navigation.
• Current understanding lacks a unified mechanistic account for these hippocampal functions.

Purpose of the Study:

• Propose a scene-construction framework for hippocampal function.
• Unify disparate cognitive roles of the hippocampus under a single theoretical model.
• Provide a mechanistic explanation for hippocampal function and dysfunction.

Main Methods:

• Review and synthesize existing evidence on hippocampal function.
• Propose a theoretical model centered on scene construction.
• Characterize the relationship between scene representations and hippocampal processing.

Main Results:

• The hippocampus actively constructs spatially coherent scenes.
• Scene construction explains how the hippocampus represents information beyond immediate sensory input.
• This framework offers a unified account for memory, imagination, and navigation.

Conclusions:

• Rethinking hippocampal architecture around scene construction provides a unified mechanistic account.
• Understanding scene-hippocampus interactions is key to explaining cognitive functions and pathologies.
• This approach advances theoretical frameworks in memory and navigation research.