topics: |  cognitive | ai | psychology | brain | computer | neuro-science

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. - Donald Hebb, Organization of Behaviour, 1949
(p.252)

Second, in the most general sense, we can consider a physical system as a
computational system when its physical states can be seen as representing
states of some other systems, where transitions between its states can be
explained as operations on the representations. p.62