Exercise may help by improving blood flow (and hence oxygen and nutrients) to the brain, reducing the risk of ministrokes and clogged blood vessels, and stimulating growth factors that promote the formation of new neurons and neuronal connections.
Highly ordered brain architectures in vertebrates consist of multiple neuron subtypes with specific neuronal connections.
IPC dendrite extension and more extensive dendritic arborization might also be required to form new neuronal connections with other neurons, thus adjusting to new developmental and physiological needs.
It is unclear whether severed axons regrow and reconnect to the same targets, or whether new neurons are born, establishing new neuronal connections.
These spontaneous activity patterns are thought to help refine the development of neuronal connections, since blocking or perturbing the activity leads to altered connectivity patterns.
Though these neurons appear to be necessary for normal courtship initiation, specific ligands and further neuronal connections remain unknown [ 47,48].
The mice have extra neuronal connections in their brains and make an unusual sound.
In essence, Dr. Kandel has proved that learning involves the creation of new neuronal connections.
"These kids have fewer – literally fewer – neuronal connections than their non-stunted classmates," he said.
Fifty years ago, nobody thought that the regrowth of neuronal connections after acute brain injury was possible.
Sea slugs exposed to the controlled-learning condition that produced long-term memory ended up with double the number of neuronal connections as the untrained animals.
