Universal Principle Guides Formation of Strong Neural Connections Across Species

Study reveals that 'heavy-tailed' neural connections, crucial for cognitive processes, are formed by self-organizing principles, not species-specific mechanisms.

Researchers have discovered that the formation of strong neural connections in the brain, crucial for cognitive processes like learning and memory, is likely guided by universal self-organizing principles, not species-specific mechanisms.
The study analyzed neural connections in fruit flies, mice, and two worm species, finding a similar pattern of 'heavy-tailed' connections - a small number of neurons with much stronger connections than the rest.
The researchers used a mathematical model based on Hebbian plasticity, a neuroscience principle stating that 'neurons that fire together, wire together', to explain the formation of these strong connections.
The model also revealed a key feature of neural network structure: clustering, or the tendency for neurons to form tightly knit groups.
The findings could provide a foundation for further investigation into brain structure in other animals and may help to better understand human brain function.