Brain Oscillations Mediate Successful Suppression of Unwanted Memories.

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المؤلفون: Waldhauser GT;Waldhauser GT; Bäuml KH; Bäuml KH; Hanslmayr S; Hanslmayr S
المصدر:
Cerebral cortex (New York, N.Y. : 1991) [Cereb Cortex] 2015 Nov; Vol. 25 (11), pp. 4180-90. Date of Electronic Publication: 2014 Jun 24.
نوع النشر :
Journal Article; Research Support, Non-U.S. Gov't
اللغة:
English

معلومة اضافية
- المصدر:
  Publisher: Oxford University Press Country of Publication: United States NLM ID: 9110718 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1460-2199 (Electronic) Linking ISSN: 10473211 NLM ISO Abbreviation: Cereb Cortex Subsets: MEDLINE
- بيانات النشر:
  Original Publication: New York, NY : Oxford University Press, c1991-
- الموضوع:
  Brain Mapping* ; Intention*; Brain/*physiology ; Memory/*physiology ; Thinking/*physiology; Adult ; Alpha Rhythm/physiology ; Avoidance Learning ; Cues ; Electroencephalography ; Female ; Humans ; Male ; Young Adult
- نبذة مختصرة :
  To avoid thinking of unwanted memories can be a successful strategy to forget. Studying brain oscillations as measures of local and inter-regional processing, we shed light on the neural dynamics underlying memory suppression. Employing the think/no-think paradigm, 24 healthy human subjects repeatedly retrieved (think condition) or avoided thinking of (no-think condition) a previously learned target memory upon being presented with a reminder stimulus. Think and no-think instructions were delivered by means of a precue that preceded the reminder by 1 s. This allowed us to segregate neural control mechanisms that were triggered by the precue from the effect of suppression on target memory networks after presentation of the reminder. Control effects were reflected in increased power in the theta (5-9 Hz) frequency band in the medial and dorsolateral prefrontal cortex and higher long-range alpha (10-14 Hz) phase synchronization. Successful suppression of target memories was reflected in a decrease of theta oscillatory power in the medial temporal lobes and reduced long-range theta phase synchronization emerged after presentation of the reminder. Our results suggest that intentional memory suppression correlates with increased neural communication in cognitive control networks that act in down-regulating local and inter-regional processing related to memory retrieval.
  (© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)
- Contributed Indexing:
  Keywords: brain oscillations; forgetting; inhibitory control; memory suppression; think/no-think
- الموضوع:
  Date Created: 20140626 Date Completed: 20160714 Latest Revision: 20151017
- الموضوع:
  20240513
- الرقم المعرف:
  10.1093/cercor/bhu138
- الرقم المعرف:
  24962991

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