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My name is Artem, I’m a computational neuroscience student and researcher. In this video we discuss the Tolman-Eichenbaum Machine – a computational model of a hippocampal formation, which unifies memory and spatial navigation under a common framework.
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OUTLINE:
00:00 - Introduction
01:13 - Motivation: Agents, Rewards and Actions
03:17 - Prediction Problem
05:58 - Model architecture
06:46 - Position module
07:40 - Memory module
08:57 - Running TEM step-by-step
11:37 - Model performance
13:33 - Cellular representations
17:48 - TEM predicts remapping laws
19:37 - Recap and Acknowledgments
20:53 - TEM as a Transformer network
21:55 - Brilliant
23:19 - Outro
REFERENCES:
1. Whittington, J. C. R. et al. The Tolman-Eichenbaum Machine: Unifying Space and Relational Memory through Generalization in the Hippocampal Formation. Cell 183, (2020).
2. Whittington, J. C. R., Warren, J. & Behrens, T. E. J. Relating transformers to models and neural representations of the hippocampal formation. Preprint at (2022).
3. Whittington, J. C. R., McCaffary, D., Bakermans, J. J. W. & Behrens, T. E. J. How to build a cognitive map. Nat Neurosci 25, 1257–1272 (2022).
CREDITS:
Icons by and
Brain 3D models were created with Blender software using publicly available BrainGlobe atlases ()
Animations were made using open-source Python packages Matplotlib and RatInABox ( )
Rat free 3D model:
This video was sponsored by Brilliant
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