Improving episodic memory: Frontal-midline theta neurofeedback training increases source memory performance.
Frontal-midline theta
Memory control
Neurofeedback
Source memory
Journal
NeuroImage
ISSN: 1095-9572
Titre abrégé: Neuroimage
Pays: United States
ID NLM: 9215515
Informations de publication
Date de publication:
15 11 2020
15 11 2020
Historique:
received:
07
08
2019
revised:
17
07
2020
accepted:
28
07
2020
pubmed:
5
8
2020
medline:
26
2
2021
entrez:
5
8
2020
Statut:
ppublish
Résumé
Cognitive and neurofeedback training (NFT) studies have demonstrated that training-induced alterations of frontal-midline (FM) theta activity (4-8 Hz) transfer to cognitive control processes. Given that FM theta oscillations are assumed to provide top-down control for episodic memory retrieval, especially for source retrieval, that is, accurate recollection of contextual details of prior episodes, the present study investigated whether FM theta NFT transfers to memory control processes. It was assessed (1) whether FM theta NFT improves source retrieval and modulates its underlying EEG characteristics and (2) whether this transfer extends over two posttests. Over seven NFT sessions, the training group who trained individual FM theta activity showed greater FM theta increase than an active control group who trained randomly chosen frequency bands. The training group showed better source retrieval in a posttraining session performed 13 days after NFT and their performance increases from pre- to both posttraining sessions were predicted by NFT theta increases. Thus, training-induced enhancement of memory control processes seems to protect newly formed memories from proactive interference of previously learned information. EEG analyses revealed that during pretest both groups showed source memory specific theta activity at frontal and parietal sites. Surprisingly, training-induced improvements in source retrieval tended to be accompanied by less prestimulus FM theta activity, which was predicted by NFT theta change for the training but not the control group, suggesting a more efficient use of memory control processes after training. The present findings provide unique evidence for the enhancement of memory control processes by FM theta NFT.
Identifiants
pubmed: 32750499
pii: S1053-8119(20)30705-9
doi: 10.1016/j.neuroimage.2020.117219
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
117219Informations de copyright
Copyright © 2020. Published by Elsevier Inc.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare no competing financial interests.