Long-term memory

Domain : Symptoms

Category : Learn more

Simplified definition

A type of memory (the most important one) that allows us to keep in mind information during months or years, and that stores our memories, knowledge, and things we have learned to do.

Source: Houria Aiouaz, for Alzheimer Foundation

Referenced definition

“Long-term memory is, conceptually, the process by which events, skills, procedures, and concepts are stored indefinitely in the mind.”

Source: Bruck JN. Encyclopedia of Animal Cognition and Behavior. Springer, Cham; 2019. Long-term memory.



“Alzheimer’s and other dementias can affect long-term memory in two different ways. A person can have difficulty storing the information in the long-term memory, and they also can have challenges with retrieving it.”

Source: Heerema E. Verywell Health. How Does Dementia Affect Long-Term Memory? Long-Term Memory Loss in Alzheimer’s. [Internet]. [cited on Sept 7, 2022]. 


  • The brain is like a computer with a hard disk to save information.
  • Long-term memory is composed of explicit memory, used to remember things voluntary, and implicit memory, which allows us to do things (unconsciously) that are part of our routine.




Long-term memory : RELATED DEFINITIONS


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