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Memory encodes, stores, and retrieves information over time, enabling future behavior and supporting personal identity.
Memory is the mind’s faculty for encoding, storing, and retrieving information when it is needed; it also supports the retention of information over time so it can influence future actions. Without the ability to remember past events, language, relationships, and personal identity could not develop. Memory is often described as an information-processing system that includes sensory processing, short-term (working) memory for active encoding/retrieval, and long-term memory for longer-lasting storage. Memory contributes to identity by preserving experiences and knowledge that shape how a person understands themselves and the world. If memory fails—through forgetfulness, disorders such as amnesia, decay over time, or brain damage—identity-relevant continuity can be disrupted. Memory includes explicit (declarative) forms that involve conscious recall (such as semantic and episodic memory) and implicit (non-declarative) forms that operate without conscious awareness (such as procedural learning and priming). Overall, the accuracy and capacity of memory depend on how information is encoded, stored, and retrieved, as well as on factors like attention, brain integrity (e.g., the hippocampus), and the match between learning and retrieval cues.
Memory encodes, stores, and retrieves information over time, enabling future behavior and supporting personal identity.
Memory is commonly modeled as sensory processing, short-term/working memory, and long-term memory, with explicit and implicit subsystems.
Identity depends on remembering past events and knowledge; memory loss or disruption (decay, brain damage, impaired consolidation) can undermine that continuity.
Memory is the faculty of the mind that encodes, stores, and retrieves information to influence future action.
Personal identity relies on the continuity of remembered experiences and knowledge that shape how a person understands themselves over time.
Declarative memory is conscious storage and recollection of information, including semantic and episodic memory.
Semantic memory stores knowledge encoded with meaning, such as facts about the world independent of personal context.
Episodic memory stores events encoded with specific spatial and temporal context, supporting recall of personal experiences.
Non-declarative memory is unconscious storage and recollection of information, such as procedural learning and priming.
Working memory is an active system that encodes and retrieves information for short-term thought and reasoning, supported by components like the phonological loop and visuospatial sketchpad.
Sensory memory holds information from the senses for less than about one second after perception, including iconic, echoic, and haptic stores.
Encoding specificity is the principle that recall is better when the cues available at retrieval match those present during learning.
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