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Episodic memory is the memory of everyday events (such as times, location geography, associated emotions, and other contextual information) that can be explicitly stated or conjured. It is the collection of past personal experiences that occurred at particular times and places; for example, the party on one's 7th birthday. [ 1 ]
Autobiographical memory (AM) [1] is a memory system consisting of episodes recollected from an individual's life, based on a combination of episodic (personal experiences and specific objects, people and events experienced at particular time and place) [2] and semantic (general knowledge and facts about the world) memory. [3]
Declarative memory refers to the capacity to store and retrieve information that can be explicitly expressed, and consists of both facts or knowledge about the world (semantic memory) and autobiographical details about one's own experiences (episodic memory). [17]
It was concluded that autobiographical memories were tied to both episodic and semantic memories. These results are important to demonstrate that aging is not accompanied by a decline in episodic memory due to a reliance on semantic memory as previously thought. [31]
Through comparison to a control group of patients it was found that parenchymal volumes increased during episodic recall, and decreased during semantic recall. The experimenters discussed that lifespan autobiographical episodic recall was largely damaged in FTLD patients and semantic autobiographical memory seemed to be spared. [24]
Autobiographical elaboration is known to benefit memory by creating links between the processed stimuli, and the self, for example, deciding whether a word would describe the personal self. Memory formed through autobiographical elaboration is enhanced as compared to items processed for meaning, but not in relation to the self. [37] [38]
Under declarative memory resides semantic and episodic memory. Semantic memory refers to memory that is encoded with specific meaning. [2] Meanwhile, episodic memory refers to information that is encoded along a spatial and temporal plane. [11] [12] [13] Declarative memory is usually the primary process thought of when referencing memory. [2]
Episodic memory is a type of long-term memory where the involuntary memories are made up of intense autobiographical memories. As a version of declarative memory, this follows the same idea that the more personal the memory is, the more likely it will be remembered.