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Recollection, familiarity, and cortical reinstatement: a multivoxel pattern analysis.


ABSTRACT: Episodic memory retrieval is thought to involve reinstatement of the neurocognitive processes engaged when an episode was encoded. Prior fMRI studies and computational models have suggested that reinstatement is limited to instances in which specific episodic details are recollected. We used multivoxel pattern-classification analyses of fMRI data to investigate how reinstatement is associated with different memory judgments, particularly those accompanied by recollection versus a feeling of familiarity (when recollection is absent). Classifiers were trained to distinguish between brain activity patterns associated with different encoding tasks and were subsequently applied to recognition-related fMRI data to determine the degree to which patterns were reinstated. Reinstatement was evident during both recollection- and familiarity-based judgments, providing clear evidence that reinstatement is not sufficient for eliciting a recollective experience. The findings are interpreted as support for a continuous, recollection-related neural signal that has been central to recent debate over the nature of recognition memory processes.

SUBMITTER: Johnson JD 

PROVIDER: S-EPMC2771457 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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Recollection, familiarity, and cortical reinstatement: a multivoxel pattern analysis.

Johnson Jeffrey D JD   McDuff Susan G R SG   Rugg Michael D MD   Norman Kenneth A KA  

Neuron 20090901 5


Episodic memory retrieval is thought to involve reinstatement of the neurocognitive processes engaged when an episode was encoded. Prior fMRI studies and computational models have suggested that reinstatement is limited to instances in which specific episodic details are recollected. We used multivoxel pattern-classification analyses of fMRI data to investigate how reinstatement is associated with different memory judgments, particularly those accompanied by recollection versus a feeling of fami  ...[more]

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