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@ARTICLE{Hansen:139688,
author = {Hansen, Niels and Chaieb, Leila and Derner, Marlene and
Hampel, Kevin G and Elger, Christian E and Surges, Rainer
and Staresina, Bernhard and Axmacher, Nikolai and Fell,
Juergen},
title = {{M}emory encoding-related anterior hippocampal potentials
are modulated by deep brain stimulation of the entorhinal
area.},
journal = {Hippocampus},
volume = {28},
number = {1},
issn = {1050-9631},
address = {New York, NY [u.a.]},
publisher = {Wiley},
reportid = {DZNE-2020-06010},
pages = {12-17},
year = {2018},
abstract = {Deep brain stimulation (DBS) of the human entorhinal area
using 50 Hz pulses has revealed conflicting results
regarding memory performance. Moreover, its impact on
memory-related hippocampal potentials has not yet been
investigated.We recorded data from seven epilepsy patients
implanted with depth electrodes in the entorhinal cortex,
hippocampus, amygdala, and parahippocampal cortex.
Entorhinal DBS (bipolar, biphasic 50 Hz pulses, on- and
off-cycles of 15 s) was applied with low amplitude (0.1 mA)
to resemble physiologic conditions. During DBS on- and
off-periods, patients learned noun-color associations that
were later tested.During entorhinal DBS we observed more
positive deflections of event-related potentials (ranging
from 700 to 950 ms) in the anterior hippocampus for the on-
vs. off-condition. We detected no effects in the amygdala,
mid hippocampus and parahippocampal cortex. On the
behavioral level, no differences in memory performance (item
and source memory) were apparent in the on- vs.
off-condition, neither across all trials nor across
patients.Our findings indicate that entorhinal DBS with low
amplitude has an impact on memory encoding-related
potentials within the anterior hippocampus, but not on
memory performance per se.},
keywords = {Adult / Amygdala: physiology / Amygdala: physiopathology /
Association Learning: physiology / Deep Brain Stimulation:
methods / Entorhinal Cortex: physiology / Entorhinal Cortex:
physiopathology / Epilepsy, Temporal Lobe: physiopathology /
Epilepsy, Temporal Lobe: psychology / Epilepsy, Temporal
Lobe: therapy / Evoked Potentials / Female / Hippocampus:
physiology / Hippocampus: physiopathology / Humans / Male /
Memory: physiology},
cin = {AG Axmacher},
ddc = {610},
cid = {I:(DE-2719)5000027},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29034573},
doi = {10.1002/hipo.22808},
url = {https://pub.dzne.de/record/139688},
}