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Source-retrieval requirements influence late ERP and EEG memory effects

Mecklinger, Axel; Johansson, Mikael LU ; Parra, Mauricio and Hanslmayr, Simon (2007) In Brain Research 1172. p.110-123
Abstract
The present study examined whether event-related potential (ERP) memory effects and measures of ongoing EEG activity (power and phase locking) are sensitive to varying source retrieval requirements in recognition memory. ERP old/new effects were obtained in two distinct source-memory tasks. Functionally related EEG power and phase locking effects were found in the delta and theta frequency range. A late posterior negativity (LPN) was larger for old than new responses irrespective of source accuracy. It was also larger when participants were required to judge how they had previously interacted with a recognized picture as compared to judging its study location. This result is consistent with the view that the LPN reflects processes in the... (More)
The present study examined whether event-related potential (ERP) memory effects and measures of ongoing EEG activity (power and phase locking) are sensitive to varying source retrieval requirements in recognition memory. ERP old/new effects were obtained in two distinct source-memory tasks. Functionally related EEG power and phase locking effects were found in the delta and theta frequency range. A late posterior negativity (LPN) was larger for old than new responses irrespective of source accuracy. It was also larger when participants were required to judge how they had previously interacted with a recognized picture as compared to judging its study location. This result is consistent with the view that the LPN reflects processes in the service of reconstructing previous episodes by integrating recognized items with task-relevant contextual attributes, and that LPN amplitude is related to the amount of contextual features available for forming such an integrated representation. Phase locking of ongoing delta and theta activity (but not EEG power) was functionally equivalent to LPN amplitude modulations, suggesting that stimulus-induced concentration of delta and theta phases without stimulus-induced power changes may be the neural mechanism of LPN generation. In addition, sustained enhancements of phase-locking precision in the theta range were observed for erroneous and delayed source judgments, suggesting that theta-phase locking is related to the coordination of multiple cortical assemblies in highly demanding task situations. (C) 2007 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
late posterior negativity, effect, ERP old/new, event-related potential, episodic memory, source memory, phase locking, oscillation
in
Brain Research
volume
1172
pages
110 - 123
publisher
Elsevier
external identifiers
  • wos:000250187100012
  • scopus:34548677534
ISSN
1872-6240
DOI
10.1016/j.brainres.2007.07.070
language
English
LU publication?
yes
id
861f1f1f-6332-40f8-9774-aa1bd77e717a (old id 655433)
date added to LUP
2007-12-15 14:34:05
date last changed
2017-06-11 03:34:20
@article{861f1f1f-6332-40f8-9774-aa1bd77e717a,
  abstract     = {The present study examined whether event-related potential (ERP) memory effects and measures of ongoing EEG activity (power and phase locking) are sensitive to varying source retrieval requirements in recognition memory. ERP old/new effects were obtained in two distinct source-memory tasks. Functionally related EEG power and phase locking effects were found in the delta and theta frequency range. A late posterior negativity (LPN) was larger for old than new responses irrespective of source accuracy. It was also larger when participants were required to judge how they had previously interacted with a recognized picture as compared to judging its study location. This result is consistent with the view that the LPN reflects processes in the service of reconstructing previous episodes by integrating recognized items with task-relevant contextual attributes, and that LPN amplitude is related to the amount of contextual features available for forming such an integrated representation. Phase locking of ongoing delta and theta activity (but not EEG power) was functionally equivalent to LPN amplitude modulations, suggesting that stimulus-induced concentration of delta and theta phases without stimulus-induced power changes may be the neural mechanism of LPN generation. In addition, sustained enhancements of phase-locking precision in the theta range were observed for erroneous and delayed source judgments, suggesting that theta-phase locking is related to the coordination of multiple cortical assemblies in highly demanding task situations. (C) 2007 Elsevier B.V. All rights reserved.},
  author       = {Mecklinger, Axel and Johansson, Mikael and Parra, Mauricio and Hanslmayr, Simon},
  issn         = {1872-6240},
  keyword      = {late posterior negativity,effect,ERP old/new,event-related potential,episodic memory,source memory,phase locking,oscillation},
  language     = {eng},
  pages        = {110--123},
  publisher    = {Elsevier},
  series       = {Brain Research},
  title        = {Source-retrieval requirements influence late ERP and EEG memory effects},
  url          = {http://dx.doi.org/10.1016/j.brainres.2007.07.070},
  volume       = {1172},
  year         = {2007},
}