Encoding information in the brain | Dileep George and Lex Fridman

TL;DR

The brain's storage of information is encoded in cortical micro circuits, which represent concepts as binary variables, connected to each other within and between cortical columns.

Transcript

how's that all encoded in the brain like where's the storage of information are we talking just maybe to get it uh a little bit more specific is it in the hardware of the actual connections is it in chemical communication is it electrical communication do we do we know so this is you know a paper that we are bringing out soon which ones um this is ... Read More

Key Insights

• 🧠 Cortical micro circuits in the brain encode concepts as binary variables, representing the presence or absence of something.
• 🏪 Connections between cortical columns store knowledge about how different concepts relate to each other.
• 🎭 Neurons within cortical columns and thalamus perform computations for inference and competition between hypotheses.
• 🦠 While cortical micro circuits may not be easily interpreted by humans, they serve as useful entities for connecting and interacting with other concepts.
• 😒 Neuroscientists have conducted experiments showing the functioning of cortical micro circuits, even if they may not explicitly use the terminology of concepts.
• 🦠 The structure and architecture of cortical micro circuits are more intricate and complex than those of artificial neural networks.
• 🧠 Cortical micro circuits are part of the brain's overall knowledge storage and computation systems.

Questions & Answers

Q: How is information stored in the brain?

Information is encoded in cortical micro circuits, with each cortical column representing a single concept, connected to other columns to encode relationships. Neurons within cortical columns and the thalamus carry out the actual computation.

Q: Are cortical columns human-interpretable?

Cortical columns don't need to be human-interpretable, but they are connected to other concepts, making it possible to find interpretations. The main focus is that they are useful for connecting and interacting with other entities in the brain.

Q: What are cortical micro circuits?

Cortical micro circuits refer to the circuits within a level of the cortex. They can be compared to the architecture of a neural network, with each level representing a different level of complexity. They are the circuitry within and between columns in the cortex.

Q: How do cortical micro circuits differ from artificial neural networks?

Cortical micro circuits are more complex than artificial neural networks and have a much more intricate structure. While artificial neural networks use different terminologies, the idea of circuits is essential in understanding the brain's functioning.

Summary & Key Takeaways

• The brain stores information through cortical micro circuits, which encode concepts as binary variables.

• Each cortical column represents a single concept, with connections between columns encoding the relationship between variables.

• The micro circuits within a cortical column and the connections to the thalamus implement computations for inference and knowledge storage.