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🧬 Neuroscience

Scientists Publish First Complete Connectome of a Mammalian Cortex

The 500-terabyte mouse cortex map reveals symmetry patterns that could explain how the brain forms long-term memories.

Dr. L. Bergström, Science Correspondent March 7, 2026 7 min read

BRAIN

A rendered section of the connectome dataset, showing 4,000 neurons and 31 million synaptic connections.

The Allen Institute has published the complete synaptic wiring diagram of the mouse primary visual cortex — 200,000 neurons connected by 523 million synapses, every one individually identified and characterised.

200K

Neurons Mapped

523M

Synapses

500TB

Dataset Size

Scientists Publish First Complete Connectome of a Mammalian Cortex

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