Decoding the Formation of New Semantics: MVPA Investigation of Rapid Neocortical Plasticity during Associative Encoding through Fast Mapping

@article{AtirSharon2015DecodingTF,
  title={Decoding the Formation of New Semantics: MVPA Investigation of Rapid Neocortical Plasticity during Associative Encoding through Fast Mapping},
  author={Tali Atir-Sharon and Asaf Gilboa and Hananel Hazan and Ester Koilis and L. Manevitz},
  journal={Neural Plasticity},
  year={2015},
  volume={2015}
}
Neocortical structures typically only support slow acquisition of declarative memory; however, learning through fast mapping may facilitate rapid learning-induced cortical plasticity and hippocampal-independent integration of novel associations into existing semantic networks. During fast mapping the meaning of new words and concepts is inferred, and durable novel associations are incidentally formed, a process thought to support early childhood's exuberant learning. The anterior temporal lobe… 
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References

SHOWING 1-10 OF 145 REFERENCES
Neocortical catastrophic interference in healthy and amnesic adults: A paradoxical matter of time
TLDR
Following Fast Mapping, a biological system demonstrated susceptibility to Catastrophic Interference, as predicted by the neuronal‐model, however, early retroactive Interference can be prevented by MTL integrity.
Fast mapping rapidly integrates information into existing memory networks.
TLDR
It is indicated that learned items can be integrated into cortical memory networks at an accelerated rate through fast mapping and the retrieval of a related known concept, in order to infer the target of the FM question, is critical for this effect.
Multi-voxel patterns of visual category representation during episodic encoding are predictive of subsequent memory
Not so fast: Hippocampal amnesia slows word learning despite successful fast mapping
TLDR
The findings are consistent with the following propositions: the hippocampus is not essential for on‐line fast mapping of novel words; but is necessary for the rapid learning of arbitrary relational information irrespective of encoding conditions.
Hippocampal contributions to episodic encoding: insights from relational and item-based learning.
TLDR
Evidence is provided that the hippocampus, while engaged during item-based working memory maintenance, differentially subserves the relational binding of items into an integrated memory trace so that the experience can be later remembered.
Prefrontal–Temporal Circuitry for Episodic Encoding and Subsequent Memory
TLDR
The results suggest that regions that demonstrate a sensitivity to novelty may actively support encoding processes that impact subsequent explicit memory and multiple content-dependent prefrontal–temporal circuits support event encoding.
Rapid Cortical Plasticity Underlying Novel Word Learning
TLDR
This first report of a neural correlate of rapid learning suggests that the brain may effectively form new neuronal circuits online as it gets exposed to novel patterns in the sensory input.
A complementary systems account of word learning: neural and behavioural evidence
TLDR
A novel theory of the cognitive and neural processes by which adults learn new spoken words is presented, which builds on neurocomputational accounts of lexical processing and spoken word recognition and complementary learning systems (CLS) models of memory.
Shift from hippocampal to neocortical centered retrieval network with consolidation.
TLDR
The results provide mechanistic support for a two-level process of the declarative memory system, involving initial representation of new associations in a network including the hippocampus and subsequent consolidation into a predominantly neocortical network.
Neural Bases of Rapid Word Learning
  • Y. Shtyrov
  • Biology, Psychology
    The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
  • 2012
TLDR
Echoing early behavioral studies in ultra-rapid word learning, the reviewed neuroimaging experiments can be taken to suggest that the brain may effectively form new cortical circuits online, as it gets exposed to novel linguistic patterns in the sensory input.
...
...