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Benefits and costs of context reinstatement in episodic memory: An event-related potential study

Bramao, Ines LU and Johansson, Mikael LU (2016) In Journal of Cognitive Neuroscience
Abstract (Swedish)
The present study investigated context-dependent episodic memory retrieval. An influential idea in the memory literature is that performance benefits when the retrieval context overlaps with the original encoding context. However, such memory facilitation may not be driven by the encoding-retrieval overlap per se, but by the presence of diagnostic features in the reinstated context that discriminate the target episode from competing episodes. To test this prediction, the encoding-retrieval overlap and the diagnostic value of the context were manipulated in a novel associative recognition memory task. Participants were asked to memorize word-pairs presented together with diagnostic (unique) and non-diagnostic (shared) background scenes. At... (More)
The present study investigated context-dependent episodic memory retrieval. An influential idea in the memory literature is that performance benefits when the retrieval context overlaps with the original encoding context. However, such memory facilitation may not be driven by the encoding-retrieval overlap per se, but by the presence of diagnostic features in the reinstated context that discriminate the target episode from competing episodes. To test this prediction, the encoding-retrieval overlap and the diagnostic value of the context were manipulated in a novel associative recognition memory task. Participants were asked to memorize word-pairs presented together with diagnostic (unique) and non-diagnostic (shared) background scenes. At test, participants recognized the word-pairs in the presence and in the absence of the previously encoded contexts. Behavioral data show facilitated memory performance in the presence of the original context, but importantly, only when the context was diagnostic of the target episode. The electrophysiological data reveal an early anterior ERP encoding-retrieval overlap effect that tracks the cost associated with having non-diagnostic contexts present at retrieval, i.e. shared by multiple previous episodes, and a later posterior encoding-retrieval overlap effect that reflects facilitated access to the target episode during retrieval in diagnostic contexts. Taken together, our results underscore the importance of the diagnostic value of the context, and suggest that context-dependent episodic memory effects are multiple determined. (Less)
Abstract
The present study investigated context-dependent episodic memory retrieval. An influential idea in the memory literature is that performance benefits when the retrieval context overlaps with the original encoding context. However, such memory facilitation may not be driven by the encoding-retrieval overlap per se, but by the presence of diagnostic features in the reinstated context that discriminate the target episode from competing episodes. To test this prediction, the encoding-retrieval overlap and the diagnostic value of the context were manipulated in a novel associative recognition memory task. Participants were asked to memorize word-pairs presented together with diagnostic (unique) and non-diagnostic (shared) background scenes. At... (More)
The present study investigated context-dependent episodic memory retrieval. An influential idea in the memory literature is that performance benefits when the retrieval context overlaps with the original encoding context. However, such memory facilitation may not be driven by the encoding-retrieval overlap per se, but by the presence of diagnostic features in the reinstated context that discriminate the target episode from competing episodes. To test this prediction, the encoding-retrieval overlap and the diagnostic value of the context were manipulated in a novel associative recognition memory task. Participants were asked to memorize word-pairs presented together with diagnostic (unique) and non-diagnostic (shared) background scenes. At test, participants recognized the word-pairs in the presence and in the absence of the previously encoded contexts. Behavioral data show facilitated memory performance in the presence of the original context, but importantly, only when the context was diagnostic of the target episode. The electrophysiological data reveal an early anterior ERP encoding-retrieval overlap effect that tracks the cost associated with having non-diagnostic contexts present at retrieval, i.e. shared by multiple previous episodes, and a later posterior encoding-retrieval overlap effect that reflects facilitated access to the target episode during retrieval in diagnostic contexts. Taken together, our results underscore the importance of the diagnostic value of the context, and suggest that context-dependent episodic memory effects are multiple determined. (Less)
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Journal of Cognitive Neuroscience
publisher
MIT Press
ISSN
1530-8898
language
English
LU publication?
yes
id
a38cb03c-7947-414d-b155-413c5fc9e911
date added to LUP
2016-08-14 23:24:29
date last changed
2016-08-17 08:00:01
@misc{a38cb03c-7947-414d-b155-413c5fc9e911,
  abstract     = {The present study investigated context-dependent episodic memory retrieval. An influential idea in the memory literature is that performance benefits when the retrieval context overlaps with the original encoding context. However, such memory facilitation may not be driven by the encoding-retrieval overlap per se, but by the presence of diagnostic features in the reinstated context that discriminate the target episode from competing episodes. To test this prediction, the encoding-retrieval overlap and the diagnostic value of the context were manipulated in a novel associative recognition memory task. Participants were asked to memorize word-pairs presented together with diagnostic (unique) and non-diagnostic (shared) background scenes. At test, participants recognized the word-pairs in the presence and in the absence of the previously encoded contexts. Behavioral data show facilitated memory performance in the presence of the original context, but importantly, only when the context was diagnostic of the target episode. The electrophysiological data reveal an early anterior ERP encoding-retrieval overlap effect that tracks the cost associated with having non-diagnostic contexts present at retrieval, i.e. shared by multiple previous episodes, and a later posterior encoding-retrieval overlap effect that reflects facilitated access to the target episode during retrieval in diagnostic contexts. Taken together, our results underscore the importance of the diagnostic value of the context, and suggest that context-dependent episodic memory effects are multiple determined.},
  author       = {Bramao, Ines and Johansson, Mikael},
  issn         = {1530-8898},
  language     = {eng},
  publisher    = {ARRAY(0x829e880)},
  series       = {Journal of Cognitive Neuroscience},
  title        = {Benefits and costs of context reinstatement in episodic memory: An event-related potential study},
  year         = {2016},
}