Memory's Physiological Basis
Engram is the key concept in all discussions on physiological basis of memory. Engram is a memory trace, a steady interaction of nervous cells, which reflects an event or information received from the outside. Regarding their content, there are 2 types of engrams: imagery engrams, which represent the structures of perceived objects in their own structure, and engram models of actions, which represent action programs in their structure. All types of engrams can establish strong associative links.