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Memory Maintenance : The Changing Nature of Neural Mechanisms
Oleh:
Abraham, Wickliffe C.
Jenis:
Article from Journal - e-Journal
Dalam koleksi:
Current Directions in Psychological Science vol. 15 no. 01 (Feb. 2006)
,
page 5-8.
Topik:
synaptic plasticity
;
memorymaintenance
;
neural networks
;
long-term potentiation
Fulltext:
02. Memory Maintenance - The Changing Nature of Neural Mechanisms.pdf
(106.54KB)
Isi artikel
Change in the synaptic communication between neurons—known as synaptic plasticity—plays a key role in learning and memory. It is not yet clear, however, whether the properties of synaptic plasticity are sufficient to account for long-term-memory maintenance. Recent studies have revealed that synaptic plasticity can indeed persist for weeks or months, as might be expected of a longterm- memory mechanism. However, memories encoded by neural systems are not static; they continue to evolve as new learning occurs. Furthermore, neural-network modeling has shown that synapses must be able to reconfigure their connection strengths during new learning if old information is to be preserved. Recent tests confirm that synapses, once modified, retain their capacity for further modification, indicating that they can indeed operate in the manner predicted to be necessary for memory maintenance in a dynamic learning network.
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