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@ARTICLE{SweeneyReed:138633,
author = {Sweeney-Reed, Catherine M and Zaehle, Tino and Voges,
Jürgen and Schmitt, Friedhelm C and Buentjen, Lars and
Kopitzki, Klaus and Richardson-Klavehn, Alan and Hinrichs,
Hermann and Heinze, Hans-Jochen and Knight, Robert T and
Rugg, Michael D},
title = {{P}re-stimulus thalamic theta power predicts human memory
formation.},
journal = {NeuroImage},
volume = {138},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {DZNE-2020-04955},
pages = {100-108},
year = {2016},
abstract = {Pre-stimulus theta (4-8Hz) power in the hippocampus and
neocortex predicts whether a memory for a subsequent event
will be formed. Anatomical studies reveal
thalamus-hippocampal connectivity, and lesion, neuroimaging,
and electrophysiological studies show that memory processing
involves the dorsomedial (DMTN) and anterior thalamic nuclei
(ATN). The small size and deep location of these nuclei have
limited real-time study of their activity, however, and it
is unknown whether pre-stimulus theta power predictive of
successful memory formation is also found in these
subcortical structures. We recorded human
electrophysiological data from the DMTN and ATN of 7
patients receiving deep brain stimulation for refractory
epilepsy. We found that greater pre-stimulus theta power in
the right DMTN was associated with successful memory
encoding, predicting both behavioral outcome and
post-stimulus correlates of successful memory formation. In
particular, significant correlations were observed between
right DMTN theta power and both frontal theta and right ATN
gamma (32-50Hz) phase alignment, and frontal-ATN theta-gamma
cross-frequency coupling. We draw the following primary
conclusions. Our results provide direct electrophysiological
evidence in humans of a role for the DMTN as well as the ATN
in memory formation. Furthermore, prediction of subsequent
memory performance by pre-stimulus thalamic oscillations
provides evidence that post-stimulus differences in thalamic
activity that index successful and unsuccessful encoding
reflect brain processes specifically underpinning memory
formation. Finally, the findings broaden the understanding
of brain states that facilitate memory encoding to include
subcortical as well as cortical structures.},
keywords = {Adult / Anterior Thalamic Nuclei: physiology / Brain
Mapping: methods / Concept Formation: physiology / Deep
Brain Stimulation: methods / Female / Humans / Male /
Mediodorsal Thalamic Nucleus: physiology / Memory:
physiology / Nerve Net: physiology / Prognosis /
Reproducibility of Results / Sensitivity and Specificity},
cin = {U Clinical Researchers - Magdeburg},
ddc = {610},
cid = {I:(DE-2719)7000000},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27208861},
doi = {10.1016/j.neuroimage.2016.05.042},
url = {https://pub.dzne.de/record/138633},
}