semantic memory
a type of long-term memory that contains data, facts, and other information, including vocabulary
Semantic memory is a type of long-term memory that contains our knowledge of the world and its meanings. It is our memory for facts, concepts, ideas, and relations between them. For example, knowing that Paris is the capital of France or that a dog is a type of animal is part of our semantic memory. Unlike episodic memory (our memory for specific events or experiences), semantic memory is not tied to any specific context or personal experience, and it is stored in a way that is independent of the conditions in which it was learned.
Semantic memory is critical for many aspects of cognition, such as language comprehension, problem-solving, and decision-making. It is also involved in our ability to categorize and classify objects and ideas, as well as to identify similarities and differences between them. A strong and well-organized semantic memory is essential for efficient and effective thinking and communication.
Neuroscientists believe that semantic memory is distributed throughout the brain, with various regions dedicated to different types of knowledge (e.g., the visual cortex for visual details). They also believe that semantic memory is supported by a network of neurons that work together to represent and retrieve information. Disorders such as semantic dementia can affect the integrity of this network and lead to impairments in semantic memory.
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