Memory Processes in Aging and Recognition
Summary
Human memory encompasses multiple processes that support the encoding, storage and retrieval of information. In recognition tasks, two principal mechanisms—familiarity and recollection—operate in concert: familiarity provides a rapid, automatic sense of prior encounter, while recollection involves the effortful reinstatement of contextual details. Healthy ageing selectively affects these processes, with recollection showing a consistent decline and familiarity remaining relatively preserved. Neural investigations reveal age-related changes in hippocampal function and frontoparietal connectivity, contributing to reduced strategic retrieval and diminished contextual binding. At the same time, compensatory recruitment of prefrontal regions may help older adults maintain performance in everyday memory challenges. Practical applications range from cognitive interventions that promote unitisation and external memory aids to lifestyle modifications targeting sleep and cardiovascular health, all aimed at bolstering specific memory processes. Understanding the interplay between preserved and vulnerable systems in the ageing brain offers pathways to mitigate decline and support independent living.
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Memory Processes in Aging and Recognition publication trend
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Technical terms
Associative memory: The ability to form links between discrete pieces of information, such as an item and its context.
Unitisation: An encoding strategy that merges multiple elements into a unified representation to support memory.
Familiarity: A fast, automatic sense of having encountered a stimulus before, lacking detailed contextual recall.
Recollection: The deliberate retrieval of contextual and situational details associated with a prior event.
Episodic memory: Memory for personally experienced events, encompassing both the items and their spatiotemporal context.
Event-related potential (ERP): A non-invasive measure of timed electrical activity in the brain in response to specific cognitive events.
References
- Improving associative memory in younger and older adults with unitization: evidence from meta-analysis and behavioral studies. Frontiers in Aging Neuroscience (2024).
- The Cognitive Aging of Episodic Memory: A View Based on the Event-Related Brain Potential. Frontiers in Behavioral Neuroscience (2013).
- The disruptive – and beneficial – effects of distraction on older adults’ cognitive performance. Frontiers in Psychology (2014).
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