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Memory functions to encode, store, and retrieve information so it can guide future behavior.
Memory is the faculty of the mind that encodes, stores, and retrieves information over time to influence future action. Without the ability to remember past events, essential capacities such as language development, relationships, and personal identity would not be possible. Memory is often described as an information-processing system with explicit and implicit components, involving a sensory processor, short-term (including working) memory, and long-term memory. Functionally, sensory memory briefly holds information from the senses (typically less than a second) as an automatic, out-of-cognitive-control response. Short-term memory supports recall for seconds to about a minute with limited capacity, and it can be improved through strategies such as chunking. Working memory acts as an encoding and retrieval system that maintains information actively, while long-term memory stores much larger amounts of information for much longer periods and is supported by more stable neural changes. Long-term memory is commonly divided into declarative (conscious, explicit) memory—such as semantic and episodic memory—and non-declarative (implicit) memory, including procedural learning and priming. Memory also depends on consolidation: the process that transitions information from short-term to long-term storage. The hippocampus is important for learning new information and for consolidation, while long-term memory relies on distributed, more permanent neural and molecular changes across the brain. Because memory is not perfect, encoding, storage, and retrieval can be disrupted by factors such as limited attention, brain damage (e.g., to memory-related regions like the hippocampus), and decay or interference over time.
Memory functions to encode, store, and retrieve information so it can guide future behavior.
Memory is commonly organized into sensory memory, short-term/working memory, and long-term memory, with declarative (explicit) and non-declarative (implicit) long-term systems.
Consolidation—supported by brain structures such as the hippocampus and by longer-lasting neural/molecular changes—is crucial for moving information from short-term to long-term storage.
The faculty of the mind that encodes, stores, and retrieves information over time to influence future action.
A brief, automatic store of sensory information lasting less than about one second after perception.
A limited-capacity system that supports recall for seconds to about a minute without rehearsal.
An active maintenance system that encodes and retrieves information for ongoing cognitive tasks.
A high-capacity system that stores information for long durations, potentially for a lifetime, supported by stable neural changes.
Conscious memory for facts and events, including semantic and episodic memory.
Unconscious memory that supports skills and automatic influences on behavior, such as procedural learning and priming.
The process by which information is stabilized and transferred from short-term storage into long-term memory.
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