The effects of unitization on familiarity-based source memory: testing a behavioral prediction derived from neuroimaging data.

@article{Diana2008TheEO,
  title={The effects of unitization on familiarity-based source memory: testing a behavioral prediction derived from neuroimaging data.},
  author={Rachel A. Diana and Andrew P. Yonelinas and Charan Ranganath},
  journal={Journal of experimental psychology. Learning, memory, and cognition},
  year={2008},
  volume={34 4},
  pages={
          730-40
        }
}
Performance on tests of source memory is typically based on recollection of contextual information associated with an item. However, recent neuroimaging results have suggested that the perirhinal cortex, a region thought to support familiarity-based item recognition, may support source attributions if source information is encoded as a feature of the relevant item (i.e., "unitized"). The authors hypothesized that familiarity may contribute to source memory performance if item and source… 

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References

SHOWING 1-10 OF 54 REFERENCES
The Nature of Recollection and Familiarity: A Review of 30 Years of Research
To account for dissociations observed in recognition memory tests, several dual-process models have been proposed that assume that recognition judgments can be based on the recollection of details
The contribution of recollection and familiarity to recognition and source-memory judgments: a formal dual-process model and an analysis of receiver operating characteristics.
  • A. Yonelinas
  • Psychology
    Journal of experimental psychology. Learning, memory, and cognition
  • 1999
TLDR
A formal dual-process model that assumes that memory judgments can be based on a threshold recollection process and a signal-detection-based familiarity process is proposed to account for both recognition and source-memory performance and found that participants could use familiarity as a basis for source judgments.
Isolating the contributions of familiarity and source information to item recognition: a time course analysis.
TLDR
Dual-process fits of the time course data indicated that familiarity information typically is retrieved before source information, and the implications for models of recognition, including dual-process and global memory models, are discussed.
Contribution of Familiarity and Recollection to Associative Recognition Memory: Insights from Event-related Potentials
TLDR
Data provide evidence that familiarity might support associative recognition if the associated components are coherently encoded into a bound representation, and indicates that the contribution of familiarity and recollection to Associative recognition depends on the kind of binding operations performed on the items rather than on the single versus multiple item distinction.
The medial temporal lobe and recognition memory.
TLDR
Evidence from neuropsychological, neuroimaging, and neurophysiological studies of humans, monkeys, and rats indicates that different subregions of the MTL make distinct contributions to recollection and familiarity; the data suggest that the hippocampus is critical for recollection but not familiarity.
Process dissociation between contextual retrieval and item recognition
TLDR
A source memory task in an event related fMRI study to dissociate MTL processes associated with either contextual retrieval or item recognition suggests a clear-cut process dissociation within the human MTL.
Multiple routes to memory: Distinct medial temporal lobe processes build item and source memories
TLDR
This work used event-related functional MRI to examine the relation between activation in distinct medial temporal lobe subregions during memory formation and the ability to later recognize an item as previously encountered and later recollect specific contextual details about the prior encounter.
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