Neurobiological basis of learning and memory (1)

In agreement to Francisco J. Rubia, Learning and memory is the process of the following steps:

1. Knowledge Codification
2. Knowledge Storage
3. Knowledge Retrieval.

So, Learning depends on the modification of connections between nerve cells.

See for example the Hebbian learning theory, "Cells that fire together, wire together":

"Let us assume that the persistence or repetition of a reverberatory activity (or "trace") tends to induce lasting cellular changes that add to its stability.… When an axon of cell A is near enough to excite a cell B and repeatedly or persistently takes part in firing it, some growth process or metabolic change takes place in one or both cells such that A's efficiency, as one of the cells firing B, is increased."

The Hebbian learning is a particular case of "associative learning", in which simultaneous activation of cells leads to pronounced increases in synaptic strength between those cells.

How can we understand the process of Knowledge codification?

Neurobiological basis of learning and memory (1)