Declarative memory

Declarative memory is the aspect of human memory that stores facts and events. It is so called because it refers to memories that can be consciously discussed, or declared. It applies to standard textbook learning and knowledge, as well memories that can be 'travelled back to' in one's 'mind's eye'. It is contrasted with procedural memory, which applies to skills. Declarative memory is subject to forgetting, but frequently-accessed memories can last indefinitely. Declarative memories are best established by using active recall combined with mnemonic techniques and spaced repetition.

Types of declarative memory

There are two types of declarative memory:

Episodic memory

Event memory; memory of a specific moment in time and place

Semantic memory

Fact knowledge independent of time- and place- context

Some people believe that episodic memory and semantic memory are really just one type of memory. However, most believe they are quite different, and indeed distinct.

Neuropsychology

Physically speaking, declarative memory requires the medial temporal lobe, especially the hippocampus and related areas of the cerebral cortex. The famous amnesiac H.M. had great medial temporal structure damage and primarily declarative impairment.

See also

• Propositional knowledge
• Procedural memory