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Declarative memory, also known as explicit memory, is a type of long-term memory that involves conscious recall. It’s divided into two categories: semantic memory for facts and general knowledge, and episodic memory for personal experiences and specific events.
Declarative memory is part of long-term memory involving “knowing that”, for example, London is the capital of England, zebras are animals, and the date of your mum’s birthday (Cohen and Squire, 1980).
Declarative memory is also known as explicit memory, as it consists of information that is explicitly stored and involves conscious effort to be retrieved. This means that you are consciously aware when you are storing and recalling information.
Episodic memory, together with semantic memory, is part of the division of memory known as explicit or declarative memory.
While episodic memory involves a person’s autobiographical experiences and associated events, semantic memory involves facts, concepts, and skills acquired over time.
Episodic memory is part of long-term declarative memory and comprises a person’s unique recollection of experiences, events, and situations.
The Canadian psychologist Endel Tulving first introduced the term ‘episodic memory’ in 1972 to distinguish ‘remembering’ from ‘knowing.’
Specific events, general events, personal facts, and flashbulb memories constitute different types of episodic memory.
They are a person’s unique memory of a specific event, so it will be different from someone else’s recollection of the same experience, e.g., your first day of school.
Episodic memory has 3 elements: specific details of the event (time and place), context (what happened next), and emotions (how you felt).
Examples of episodic memory include: recalling your first abroad, remembering where you were when you heard that Mr. Trump had won the 2016 election and the memory of your first day in college.
It is possible to store episodic memories in auto-associative neural networks provided that the representation of the stored memories contains information about the spatiotemporal context wherein the representation was examined (Khalil, Moftah & Moustafa, 2017).
Neural networks, which enhance the comprehension of the transmission and the reception of various messages to and from the body, comprise interconnected structures or neurons which harmoniously produce different intra-brain cognitions (Henderson, 2012).
Additionally, these networks can contract or expand based on the type of information being processed at a given time (Nestor, Kubicki, Gurrera, Niznikiewicz, Frumin, McCarley & Shenton, 2004).
Semantic memory is a type of long-term declarative memory that comprises facts about the world that are not linked to particular events or contexts. Semantic memory involves “knowing that” (e.g., Paris is the capital of France).
The Canadian psychologist Endel Tulving first introduced the term ‘semantic memory’ in 1972 to distinguish ‘remembering’ from ‘knowing.’
Semantic memory concerns knowledge about the world which is shared by everyone rather than personal knowledge, this
may relate to the functions of objects, what behavior is appropriate, or even abstract concepts such as maths.
Together, episodic memory and semantic memory constitute explicit or declarative memory, which is part of long-term memory. Episodic memory involves a person’s recollection of temporally dated information that permits the agent to mentally travel back in time and associate emotions with experiences.
Semantic memory, on the other hand, involves a structure of recorded skills, facts, and concepts acquired over time—via the accumulation of episodic memories. For instance, while each visit to Paris may constitute an episodic memory, the experiences of how Paris looks would constitute the semantic representation of the word ‘Paris.’
Furthermore, contrary to Tulving’s original proposal that episodic memory and semantic memory competed against each other for retrieval, more recent research based on experiments on LSA (Latent Semantic Analysis) suggests that the strength of semantic cues on retrieval is positively correlated with the strength of episodic cues (Howard & Kahana, 2002).
Additionally, impacts on episodic memory seem to affect semantic memory. For instance, the damage wrought to the medial temporal lobe through conditions such as anterograde amnesia impairs both episodic memory and semantic memory (Tulving & Markowitsch, 1998).
Declarative memory, a part of long-term memory, is composed of two components: semantic memory and episodic memory.
Semantic memory refers to our memory for facts and general knowledge about the world, while episodic memory relates to our ability to recall specific events, situations, and experiences that have happened in our personal past.
Declarative memory, also known as explicit memory, involves the conscious recall of facts (semantic memory) and events (episodic memory). In contrast, non-declarative or implicit memory involves unconscious recall and influences our behavior without awareness.
It includes procedural memory (skills and habits), priming (changes in perception and belief caused by prior exposure), and classical conditioning (learned responses to stimuli).
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